Preheat the oven to 425°F and line a 9x13 baking sheet with parchment paper.
In a small bowl, combine all the seasonings for the fajita seasoning blend. Set aside.
2 tsp salt, ½ tsp ground black pepper, ½ tsp paprika, 1 tsp onion powder, 1 tsp garlic powder, 2 tsp ground cumin, 1 ½ tsp chili powder
Remove any excess fat from the chicken. Rinse and pat dry the chicken breast and then slice into even sized thin strands.
1 1/2 lbs boneless skinless chicken breast
Slice the peppers and onions into even sized thin strands.
1 green bell pepper, 1 red bell pepper, 1 yellow bell pepper, 1 small red onion
Add the sliced peppers, onions and chicken to the baking sheet and drizzle with oil and the fajita seasoning.
2 Tbsp olive oil
Toss everything until well combined and everything is fully seasoned.
Bake at 425°F for 20-25 minutes, until the chicken is cooked through and veggies are tender. (The internal temperature of cooked chicken is 165°F)
Wrap some tortillas in foil and add into the oven about 6-8 minutes before the chicken is done. (This gives you warm tortillas, but totally optional.)
Remove the sheet pan fajitas and tortillas from the oven and top the fajitas with freshly squeezed lime juice and chopped cilantro.
Serve immediately with the warm tortillas and your favorite fajita toppings.