
Preheat the oven to 400°F.
Place the chicken, ¾ cup of the mozzarella, ¾ cup of the cheddar cheese, ¾ cup of the salsa verde, sour cream, salt, chili powder, cumin, and pepper in a large mixing bowl. Mix until the ingredients are well incorporated.
Pour ¼ cup of the salsa Verde into a 2-quart casserole dish. Pour the chicken mixture on top and spread it out in an even layer. Top with the remaining salsa Verde, mozzarella, and cheddar cheese.
Bake for 30 minutes, or until the casserole in bubbling and the chicken is cooked all the way through.
Top with avocado, pico de gallo and cilantro.