Preheat oven to 375.
Pat diced chicken dry and place in greased pan.
Add sliced cheese on top of chicken.
Mix the Parmesan cheese, mayonnaise, sour cream, garlic powder, salt and pepper in a bowl. Then spread over the cheese layer.
Sprinkle with additional Parmesan cheese.
Bake for 1 hour.
Note: Use small blue casserole dish for this recipe.
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