Preheat oven to 350 degrees F. Spray an 8-inch baking dish with baking spray and set aside.
Combine sour cream and hot sauce in a mixing bowl and whisk until well combined. Stir in ½ cup each of cheddar and Monterey Jack cheeses, followed by the chicken.
Transfer the mixture to the prepared baking dish. Sprinkle on the remaining cheese.
Bake 20-30 minutes, until the cheese is bubbly, broiling to a golden brown at the end of the bake if desired. Let cool slightly before serving.
This nutrition information is based on the exact products I used in this recipe. Brands and sizes of products could alter exact nutrition and should always be calculated independently.