Preheat your oven to 400°F (200°C) and line a baking sheet with parchment paper or a silicone baking mat.
In a large mixing bowl, combine the ground chicken, breadcrumbs, eggs, minced onion, minced garlic, chopped parsley, salt, and black pepper. Use your hands or a fork to mix the ingredients thoroughly until they are well incorporated.
Scoop out a small amount of the mixture and roll it between your palms to form a compact meatball, about 1-inch in diameter. Place the meatball on the prepared baking sheet, and repeat this process until all the mixture has been used.
Bake the meatballs in the preheated oven for 18-22 minutes, or until they are cooked through and lightly browned on the outside.
Once the meatballs are cooked, remove them from the oven and let them cool for a few minutes before serving.