Preheat your oven to 375°F (190°C). Lightly grease a small baking dish or casserole dish so the bake doesn’t stick and cleanup is easy.
In a large bowl, combine the shredded chicken, softened cream cheese, hot sauce, and ranch or blue cheese dressing. Stir until the mixture is smooth and evenly coated.
Stir in half of the mozzarella and cheddar cheeses, saving the rest for topping. Fold in garlic powder and paprika, then season with a pinch of salt and pepper.
Spread the mixture into the prepared dish. Drizzle the melted butter over the top for a glossy, lightly crisp finish as it bakes.
Sprinkle the remaining mozzarella and cheddar on top. If you like a more golden crust, you can add an extra sprinkle of cheese toward the end of baking.
Bake in the preheated oven for 18–22 minutes, until the cheese is melted, bubbling around the edges, and the center is hot. If you prefer a lightly browned top, turn on the broiler for the last 1–2 minutes, watching carefully to prevent burning.
Remove from the oven and let it rest for about 5 minutes. Sprinkle with chopped green onions or chives for a fresh finish and color before serving.
Serve warm with celery sticks, carrot sticks, tortilla chips, or toasted bread slices. The dish shines as a party starter or a comforting main alongside a simple side salad.