Creating a Healthy Chicken Taco Casserole is straightforward when you follow these steps:

1. Preheat the Oven: Preheat your oven to 350°F (175°C).
2. Prepare Casserole Dish: Lightly grease a 9×13 inch casserole dish with olive oil.
3. Mix Ingredients: In a large mixing bowl, combine the shredded chicken, black beans, corn, diced tomatoes, bell peppers, taco seasoning, salsa, salt, and pepper. Mix well until all ingredients are evenly coated.
4. Layer the Tortillas: Spread half of the tortilla strips evenly across the bottom of the prepared casserole dish.
5. Add Chicken Mixture: Pour the chicken and vegetable mixture over the tortilla strips, spreading it evenly.
6. Top with Tortillas: Layer the remaining tortilla strips over the chicken mixture.
7. Cheese It Up: Sprinkle the shredded cheese evenly over the top layer of tortillas.
8. Bake: Place the casserole in the preheated oven and bake for 30-35 minutes or until bubbly and the cheese is melted.
9. Cool Down: Allow the casserole to cool for about 5-10 minutes before serving; this helps it set up slightly.
10. Garnish: If desired, garnish with avocado, fresh cilantro, or a dollop of Greek yogurt or sour cream before serving.

These step-by-step instructions will guide you to creating a delicious casserole that smells as good as it tastes!