In a large bowl, toss the sliced chicken, bell peppers, and onion with olive oil and fajita seasoning until evenly coated.
Spread the mixture in a single layer on a large baking sheet.
Bake for 20-25 minutes, or until the chicken is cooked through and the vegetables are tender-crisp.
Warm the tortillas according to package directions.
Serve the chicken and vegetable mixture in the warm tortillas with your favorite toppings.
Notes
For extra flavor, you can marinate the chicken in fajita seasoning and a little lime juice for 30 minutes before baking.
If you don’t have fajita seasoning, you can make your own with chili powder, cumin, paprika, garlic powder, onion powder, and a pinch of cayenne pepper.
This recipe is a great option for meal planning, as leftovers can be stored in the refrigerator for up to 3 days.