Preheat oven to 350°F.
Combine shredded chicken, black beans, corn, tomatoes, green chiles, and cooked rice in a large bowl.
Add taco seasoning, sea salt, garlic powder, pepper, Greek yogurt, cilantro, and shredded cheese; mix well.
Transfer mixture to a casserole dish.
Bake for 20 minutes, then sprinkle additional cheese on top and bake 5 more minutes.