Preheat your oven to 400°F. Line a baking sheet with parchment paper or a silicone baking mat to ensure the meatballs don’t stick.
In a large bowl, combine the ground chicken, breadcrumbs, egg, garlic powder, onion powder, and green onions. Season with salt and pepper to taste. Using a wooden spoon or your clean hands, stir until well combined. You want the mixture to be cohesive yet not overly sticky.
Roll the mixture into 1¼ to 1 ½-inch meatballs, forming about 20 meatballs. The goal is to make them uniform in size for even cooking.
Place the meatballs onto the prepared baking sheet and bake for 4 to 5 minutes, or until all sides are browned. Browning them first enhances the flavor and gives a great texture.
Transfer the meatballs into your crockpot. Pour in the buffalo sauce and gently toss to combine, ensuring each meatball is coated in sauce.
Cover the crockpot and cook on low heat for 2 hours. You'll know they're done when they are cooked through and heated all the way.
Serve immediately, drizzled with blue cheese dressing, if desired. These meatballs are excellent hot but can also be enjoyed at room temperature, making them perfect for parties!