Preheat the oven to 350°F (180°C), or 160°C if using a fan oven, and line a baking sheet with parchment paper or a silicone baking mat.
In a large bowl, combine ground chicken, egg, breadcrumbs, carrot, green onion, garlic, smoked paprika, onion powder, salt, pepper, and 3 tablespoons buffalo wing sauce.
Mix the ingredients gently by hand or with a spatula until just combined. Avoid overmixing.
Use a cookie scoop to portion approximately 1-tablespoon-sized meatballs.
Roll each portion gently between your hands to form balls. Place them on the prepared sheet pan.
Bake in the preheated oven for 18-20 minutes or until the internal temperature of the meatballs reaches 165°F (74°F). Remove from the oven.
Toss the meatballs in a large bowl along with the remaining buffalo wing sauce; alternatively, you can drizzle the buffalo sauce on the meatballs.
Serve with blue cheese dressing for dipping, and garnish with sliced green onions.