Preheat your oven to 350°F (175°C).
Shred your cooked chicken into bite-sized pieces.
In a large mixing bowl, combine the shredded chicken with the salsa verde and stir well.
Add the sour cream, black beans, corn, garlic powder, onion powder, cumin, salt, and black pepper to the bowl and mix until well combined.
Transfer the mixture into a greased 9x13-inch baking dish and spread it evenly. Sprinkle the shredded cheddar cheese on top.
Bake for 25-30 minutes until the cheese is bubbly and golden brown. Let cool for 5 minutes before serving.