Preheat Oven : Set oven to 350°F (175°C). Grease a small baking dish or oven-safe bowl.
Combine Ingredients : In a mixing bowl, combine shredded chicken, cream cheese, Buffalo sauce, ranch or blue cheese dressing, and half of the shredded cheeses. Mix until evenly combined.
Transfer to Baking Dish : Spread mixture evenly in the prepared dish. Sprinkle remaining shredded cheese on top.
Bake Dip : Bake for 15–20 minutes, or until hot, bubbly, and cheese is melted.
Add Toppings : Remove from oven and garnish with optional toppings like diced red peppers, black olives, or green onions.
Serve : Serve warm with tortilla chips, crackers, or fresh veggie sticks for dipping.