01 - Preheat the oven to 350°F. Lightly grease a medium baking dish (approximately 8x8 inch).
02 - In a large bowl, combine softened cream cheese, sour cream, hot sauce, ranch dressing, garlic powder, and onion powder. Mix until smooth.
03 - Fold in shredded chicken, cheddar cheese, and mozzarella cheese until well combined.
04 - Spread the mixture evenly in the prepared baking dish.
05 - Bake for 20-25 minutes, or until hot and bubbly throughout.
06 - Remove from oven and let cool slightly for 2-3 minutes.
07 - Serve warm with celery sticks for dipping.