Preheat the oven to 400°F. Line a baking sheet with parchment paper or lightly grease it.
In a large bowl, combine the ground chicken, egg, gluten-free breadcrumbs, Parmesan, 3 tablespoons of buffalo sauce, onion powder, garlic powder, paprika, salt, and pepper. Mix just until combined.
Roll the mixture into 20–24 meatballs, about 1½ tablespoons each, and place them on the prepared baking sheet.
Bake for 16–18 minutes, or until the meatballs reach an internal temperature of 165°F.
Make the Buffalo Sauce
Add the cooked meatballs to a bowl and gently toss with remaining buffalo sauce until evenly coated.
Serve warm with ranch or blue cheese dressing and celery and carrot sticks.