Preheat the oven to 375°F (190°C) and grease a baking dish.
In a large bowl, mix shredded chicken, buffalo sauce, ranch dressing, cream cheese, garlic powder, and onion powder.
Spread the mixture evenly into the prepared baking dish.
Top with shredded cheddar cheese and arrange tater tots evenly over the mixture.
Bake for 30-35 minutes or until golden and bubbly.
Remove from oven and garnish with chopped green onions and blue cheese if desired.
Serve warm and enjoy!