Preheat the oven to 350°F and lightly grease a 9x13-inch baking dish.
Mix cream of chicken soup, sour cream, broth, green chiles, chili powder, garlic powder, salt, and pepper.
Stir the cooked chicken into the creamy sauce until evenly coated.
Arrange one-third of the tortilla pieces in the bottom of the dish.
Add one-third of the chicken mixture, vegetables, and cheese.
Repeat the layers until the ingredients are used, finishing with chicken mixture.
Sprinkle the remaining cheddar evenly over the top.
Bake for 30 to 35 minutes until hot, bubbling, and melted.
Broil for 1 to 2 minutes if desired, watching closely.
Rest for 10 minutes before serving warm.