01 - In a large mixing bowl, combine the ground chicken, grated onion, minced garlic, chopped parsley, breadcrumbs, milk, egg, salt, black pepper, oregano, and paprika. Gently mix until all ingredients are evenly incorporated — avoid overmixing to keep the meatballs tender.
02 - Lightly wet your hands to prevent sticking, then portion the mixture into 16 to 18 equal-sized balls, rolling each one gently between your palms until smooth and uniform.
03 - Heat the olive oil in a large skillet or frying pan over medium heat until the oil shimmers slightly, indicating it is ready for cooking.
04 - Place the meatballs in the skillet in batches, leaving a little space between each one to ensure even browning. Cook for 5 to 7 minutes per side, turning carefully with a spatula or tongs, until golden brown on the outside and the internal temperature reaches 165°F (74°C).
05 - For extra juiciness, transfer the browned meatballs to a preheated oven at 350°F (180°C) and bake for an additional 5 minutes until fully cooked through.
06 - Serve the meatballs hot alongside your favorite sauce, over pasta, or as an appetizer with toothpicks and dipping sauce.