Add the chicken breast to a bowl and season with salt, chili powder, garlic powder, and cumin.
3. Step
In a large skillet, heat 2 tablespoons vegetable oil and cook chicken until slightly charred and no longer pink. Cook chicken in batches to avoid overcrowding the pan. Remove cooked chicken from the skillet, and transfer into a bowl.
4. Step
Heat another tablespoon of oil, add the onions and cook for a couple minutes until onions are slightly translucent.
5. Step
Add the garlic and peppers and cook slightly, then remove from heat. Transfer garlic and peppers to the chicken bowl, then top with lime juice.
6. Step
Lay down half the tortilla chips on the skillet, followed by half the fajita mixture, and top with pepper Jack and cheddar cheese. Repeat with the remaining ingredients.
7. Step
Bake until the cheese has melted, about 15 minutes.
