Step 1: Preheat your oven to 375°F (190°C).
Step 2: In a mixing bowl, combine the shredded chicken with the Taco Seasoning.
Step 3: In your baking dish, layer tortillas, followed by half of the chicken, beans, corn, spinach, and salsa. Top with cheese.
Step 4: Repeat the layers with remaining ingredients and finish with tortillas and cheese on top.
Step 5: Cover with foil and bake for 25 minutes, then remove foil and bake for an additional 10-15 minutes.
Step 6: Let cool briefly, garnish with cilantro, and serve.