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 fold everything together until just evenly incorporated — avoid overmixing to keep the meatballs tender.
02 - Lightly wet your hands with water to prevent sticking. Portion the mixture and roll into 16 to 18 uniform meatballs, each roughly 1½ inches in diameter.
03 - Heat the olive oil in a large skillet or frying pan over medium heat until the oil shimmers.
04 - Working in batches to avoid crowding, arrange the meatballs in the skillet with slight spacing between each. Cook for 5 to 7 minutes per side until deeply golden brown on all sides and cooked through to an internal temperature of 165°F. For extra juiciness, transfer the finished meatballs to a preheated 350°F oven for an additional 5 minutes.
05 - Serve the meatballs hot alongside pasta, over rice, with your favorite sauce, or on their own as an appetizer.