Preheat the oven to 350°F (175°C).
In a large mixing bowl, combine the shredded chicken, salsa, black beans, corn, and taco seasoning. Mix well to incorporate all ingredients.
Transfer the mixture to a greased 9x13 inch baking dish, spreading it evenly.
Sprinkle shredded cheese over the top evenly.
Add a layer of crushed tortilla chips over the cheese.
Cover the dish with foil and bake for 25 minutes.
Remove the foil and bake for an additional 10-15 minutes, or until the top is bubbly and golden brown.
Let it rest for 10 minutes before serving, then garnish with chopped cilantro and optional sour cream.