Preheat your oven to 375°F (190°C). Lightly grease a small baking dish (about 1 quart).
In a bowl, beat the cream cheese until smooth.
Stir in the hot sauce, ranch, and garlic powder until fully combined.
Fold in the shredded chicken, half the cheddar, mozzarella (if using), blue cheese (if using), and green onions. Season with a pinch of salt and pepper.
Spread the mixture into the baking dish. Top with the remaining cheddar.
Bake for 18–22 minutes, until bubbling around the edges and the cheese on top is melted and lightly golden.
Let it rest for 5 minutes.
Garnish with extra green onions. Serve warm with your favorite dippers.