01 - Preheat oven to 400°F and line a baking tray with parchment paper or lightly grease with oil.
02 - Heat 1 tablespoon olive oil in a skillet over medium heat. Sauté the diced onion for 3 to 4 minutes until softened. Stir in the minced garlic and cook for 1 minute more. Set aside to cool slightly.
03 - In a large bowl, combine ground chicken, cooled onion and garlic, sage, thyme, salt, black pepper, and nutmeg if using.
04 - Incorporate breadcrumbs and the beaten egg into the chicken mixture. Blend gently until ingredients are just combined; avoid overmixing.
05 - Using damp hands, portion the mixture into balls with about 1 heaping tablespoon each. Place balls evenly spaced on the prepared tray.
06 - Drizzle or brush the tops of the chicken balls with the remaining 1 tablespoon olive oil.
07 - Bake for 20 to 25 minutes, turning once halfway through, until golden and fully cooked (internal temperature should reach 165°F).
08 - Serve hot alongside your preferred dip or incorporate as desired into a meal.