Preheat oven to 375°F.
In a large mixing bowl, combine softened cream cheese, sour cream, mayonnaise, garlic powder, onion powder, salt, and pepper. Stir until smooth.
Add the cooked chicken, steamed broccoli, and half of the shredded cheese. Mix well.
Spread mixture evenly into a greased 9x13 baking dish.
Top with the remaining cheese (and a sprinkle of paprika if you’d like).
Bake uncovered for 30–35 minutes, until bubbly and golden.
Serve hot and enjoy!