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These sheet pan keto chicken fajitas are a simple and delicious meal the entire family will love. Serve in a bowl with cauliflower rice, salsa, and guacamole for Whole30, or serve in some grain free tortillas for taco night!
Why You’ll Love This Recipe
I could eat Mexican food every single day and it would never get old. If you’re looking for easy chicken fajita recipes, look no further! This is one dinner that I can make and it will be a hit with the kiddos, too. Yay for not having to cook multiple meals!
These low carb chicken fajitas are the easiest, one-pan dish you can make. The homemade Keto fajita mix is a much healthier alternative to the additive-filled packets! This recipe is also perfect for making fajitas for a crowd.
Ingredients for Easy Sheet Pan Keto Fajitas
See the recipe card for full quantities – this is just an overview!
Sheet Pan Chicken Fajitas
- Avocado oil (I like to use this because of the high heat point, but regular olive oil works, too!)
- Red bell pepper
- Orange bell pepper
- Green bell pepper
- Medium onion
- 1.5 lbs chicken breasts
Fajita Seasoning Mix
The best part is the easy homemade paleo fajita seasoning mix! Many of the seasoning packets you find in stores have gluten, MSG, and lots of additives. This is an easy and cost-effective alternative! You can triple the amounts used in this recipe and store the extra seasoning mix for future use. This mixture also makes a great homemade taco seasoning! Here is what you need:
- Cumin
- Chili powder
- Garlic powder
- Paprika
- Oregano
- Salt
- Red pepper flakes
How to Make One Pan Fajitas
Making fajitas in the oven has never been easily. No stovetop splattering or mess to clean up!
Step 1: Preheat your oven to 400 degrees. Slice the peppers, onions, and chicken into thin strips (about ¼-1/2 inch wide). Make sure the chicken pieces are of even thickness to prevent uneven cooking. This also helps them to crisp up. When everything is piled on top of each other, they end up steaming instead of baking. Spacing everything out as much as possible is key!
Step 2: Put the peppers and chicken strips into a a large bowl and add the avocado oil and spices. Mix it all together and spread it out evenly on a parchment-lined baking sheet.
Step 3: Bake for 25-30 minutes until everything is cooked through and beginning to brown.
How To Serve Paleo Fajitas
For gluten free, serve in corn tortillas. For paleo, use grain free tortillas or to make this Whole30 friendly, serve on a salad/in a bowl with cauliflower rice, avocado, salsa, and dairy free ranch! The options are endless when it comes to putting together your own healthy fajita bowl.
Recipe FAQs
They are! With only 9 grams of carbs per serving, this meal is definitely low carb diet-friendly.
These are! All of the ingredients used here are Whole30 friendly.
I love to use this 15 x 21 inch sheet pan for all of my recipes. It’s big enough so everything is spread out and not overlapping, which gets them nice and crispy!
Yes, this fajita recipe is gluten free, dairy free, and paleo.
Sure can! To freeze, place the chicken, veggie, & spice/oil mixture into a gallon freezer bag. Seal the ziplock bag, squeezing out as much of the air as you can as you do so. The day before you'd like to cook the fajitas, move the bag to the fridge to thaw.
Just 268 calories per serving!
More Healthy Mexican-Inspired Recipes
Sheet Pan Chicken Fajitas
Ingredients
- 3 tbsp avocado oil
- 1 red bell pepper
- 1 orange (or yellow) bell pepper
- 1 green bell pepper
- 1 medium onion
- 1-1.5 lbs chicken breasts
- 1.5 tsp cumin
- 2 tsp chili powder
- 1 tsp garlic powder
- 1 tsp paprika
- ½ tsp oregano
- 1 tsp sea salt
- ½ tsp black pepper
- ½ tsp red pepper flakes
Instructions
- Preheat your oven to 400 degrees. Slice the peppers, onion, and chicken into thin strips (about ¼-1/2 inch wide). Make sure the chicken pieces are of even thickness to prevent uneven cooking.
- Put these pieces into a large bowl and add the avocado oil and spices. Mix together and spread out evenly on a parchment lined rimmed baking sheet.
- Bake for 25-30 mins until cooked through and beginning to brown. Serve in tortillas, on top of a salad, or in a rice bowl with your favorite toppings. Enjoy!
Notes
Nutrition
All nutrition facts are an estimate and automatically calculated. While I fact check them using My Fitness Pal, please note that they may not always be 100% accurate and depend on ingredients used. Weigh your total and divide by the number of servings for the most accurate grams per serving size.
These were super easy. I subbed a poblano pepper in for one of the bell peppers because it’s what I had on hand and it was so tasty! Definitely adding this into our rotation.
so glad to hear it, Allison!
One of family favorites! Love how easy it is!
The best! So easy, delicious and full of flavor. I can be really weird about chicken and this comes out perfect every time! Even the leftovers!
Love a good sheet pan recipe! This one is so easy and flavorful – definitely in regular rotation at our house.
This sheet pan chicken fajitas recipe tastes delicious! So easy to make and even easier to clean up afterwards. Love all your recipes.
This sheet pan chicken fajitas recipe tastes delicious ! So easy to make and even easier to clean up afterwards. Love all your recipes.
This meal was a HUGE win last night. So easy and so tasty! I love how Mary is not afraid of seasoning- I’ve often come across recipes where I’ve needed to up the spice measurements to get enough flavor, but I have never had that problem with Mary’s recipes. This was amazing! And they made for really tasty leftovers. I had mine with a little rice over salad with a touch of sour cream. Obsessed!
So easy, kids love it, good for meal prep and delicious!
These were tasty. Great flavor! Very easy to make. 🙂
Delicious! And so simple to make.