01 - Set oven to 400°F. Prepare a baking tray with parchment paper or lightly oil the surface.
02 - Heat 1 tablespoon olive oil in a skillet over medium. Cook diced onion for 3–4 minutes until soft. Add minced garlic and cook one minute more, then let cool slightly.
03 - In a large mixing bowl, add ground chicken, cooked onion and garlic, sage, thyme, salt, pepper, and optional nutmeg. Mix to incorporate.
04 - Blend in breadcrumbs and beaten egg until the mixture is just combined. Avoid overmixing for best texture.
05 - With damp hands, shape the mixture into 20 balls, each about 1 heaping tablespoon, and arrange on the prepared tray.
06 - Drizzle or brush chicken balls with remaining olive oil. Bake for 20–25 minutes, turning halfway, until golden brown and cooked through (internal temperature 165°F).
07 - Plate hot with your preferred dip or as part of a main course.