The chicken and colorful bell peppers get perfectly seasoned and roasted in the oven, and the toppings let you customize each fajita just how you like it.
In a large bowl, combine diced chicken, olive oil, paprika, garlic powder, onion powder, Mexican chili powder, dried oregano, cumin, salt, and black pepper.
Prepare a baking sheet by lining it with parchment paper or lightly greasing it. Spread the seasoned chicken and vegetables evenly across the baking sheet, making sure they are in a single layer.
Warm your tortillas according to package instructions or your preference. Once the chicken and veggies are cooked, place a generous portion on each tortilla.