Preheat the oven to 350°F.
In a medium mixing bowl, blend the cream cheese, sour cream, buffalo sauce, and garlic pepper together using a whisk or hand mixer until the mixture becomes fluffy.
Stir in the shredded chicken, half of the cheddar cheese, half of the mozzarella cheese, and sliced green onions.
Transfer the mixture to a small baking dish or cast iron.
Sprinkle the remaining cheddar cheese and mozzarella cheese on top. Bake for 20 minutes or until the cheese is melted and bubbly.
Top with blue cheese crumbles, parsley, and more green onion.
Cool for at least 5 minutes before serving.
