Preheat your oven to 350°F (175°C) and lightly grease a 9×13-inch baking dish.
In a large mixing bowl, combine the shredded chicken, enchilada sauce, cooked rice, black beans, corn, sour cream, and 1 cup of the shredded cheddar cheese.
Add in the chili powder, cumin, onion powder, garlic powder, salt, and black pepper. Mix thoroughly until all ingredients are evenly incorporated.
Pour the mixture into the prepared baking dish and spread it out evenly.
Sprinkle the remaining cup of shredded cheddar cheese over the top of the casserole.
Bake for about 20 to 30 minutes or until the cheese is melted and bubbly.
Remove from the oven and let it sit for a few minutes before serving. Garnish with chopped fresh cilantro.