01 - Preheat the oven to 350°F. Lightly grease an 8x8 inch medium baking dish with cooking spray or butter.
02 - In a large bowl, combine softened cream cheese, sour cream, hot sauce, ranch dressing, garlic powder, and onion powder. Mix with a spoon or spatula until completely smooth and well incorporated.
03 - Fold in shredded chicken breast, cheddar cheese, and mozzarella cheese into the creamy base. Mix gently until all ingredients are evenly distributed throughout the mixture.
04 - Spread the chicken and cheese mixture evenly into the prepared baking dish, smoothing the top with a spatula to ensure uniform thickness.
05 - Bake for 20-25 minutes, or until the dip is hot throughout, bubbly around the edges, and the cheese has melted completely.
06 - Remove from oven and let the dip cool for 5-10 minutes to allow it to set slightly for easier dipping.
07 - Serve warm with fresh celery sticks for dipping. Also pairs well with tortilla chips or sliced bell peppers.