01 - Preheat oven to 400°F. Line a baking tray with parchment paper or lightly grease surface.
02 - In a skillet, warm 1 tablespoon olive oil over medium heat. Sauté onion for 3–4 minutes until softened. Stir in garlic and cook for 1 additional minute. Allow mixture to cool slightly.
03 - In a large mixing bowl, add ground chicken, sautéed onion and garlic, chopped sage, thyme, salt, black pepper, and nutmeg if using. Mix until just combined.
04 - Stir in breadcrumbs and beaten egg. Mix gently to incorporate—avoid overmixing for tenderness.
05 - With damp hands, shape mixture into balls, each about 1 heaping tablespoon in size. Arrange evenly on prepared tray.
06 - Brush or drizzle remaining olive oil over chicken balls. Bake in preheated oven for 20–25 minutes, turning halfway, until golden brown and cooked through to an internal temperature of 165°F.
07 - Serve hot, accompanied by your favorite dip or as part of a main course.