Preheat your oven to 400°F (200°C) and line a baking sheet with parchment paper.
In a large mixing bowl, combine the ground chicken, breadcrumbs, minced garlic, chopped green onions, salt, black pepper, and paprika. Mix until well combined.
Using your hands, form the mixture into meatballs, about 1 inch in diameter, and place them on the prepared baking sheet.
Drizzle the olive oil over the meatballs to help them crisp up while baking.
Bake the meatballs in the preheated oven for 20-25 minutes, or until they are cooked through and reach an internal temperature of 165°F (74°C).
While the meatballs are baking, prepare the creamy dip. In a small bowl, mix together the Greek yogurt, crumbled bleu cheese, lemon juice, and milk (if using). Stir until smooth and well combined.
Once the meatballs are done, remove them from the oven and toss them in the buffalo wing sauce until evenly coated.
Serve the spicy Buffalo chicken meatballs warm with the creamy dip on the side.