Preheat oven to 400º F.
Add chicken, onion powder, garlic powder, egg, green onions, salt, black pepper, buffalo sauce, and bread crumbs to a large bowl. Gently mix together until well combined.
Using your hands, form golf ball sized meatballs.
Place meatballs on a prepared baking sheet.
Using a pastry brush, lightly coat the meatballs with oil.
Bake meatballs for 20 -25 minutes.
Once you've removed meatballs from the oven, drizzle them with buffalo sauce and gently stir to coat them with sauce.
Serve with small forks or toothpicks and extra sauce on the side. Optional: serve with a dish of blue cheese dressing.