
Mix the ingredients. Preheat the oven to 400°F (200°C) and line a rimmed baking sheet with parchment paper. In a medium bowl, combine the chicken, egg, onion, almond flour, parmesan, parsley, garlic, salt, pepper, and oregano. Using your hands, mix the ingredients together until well combined.
Scoop and roll. Measure out 1 ½ tablespoons of the mixture (or use a medium cookie scoop) and roll the mixture between your hands, forming about 30 meatballs.
Bake until browned. Place the meatballs on the prepared baking sheet and bake for 20 to 22 minutes, until lightly browned on the outside and cooked through (to 165°F on an instant-read thermometer). Avoid overbaking them, so that they stay juicy.
Serve. Enjoy the chicken meatballs on their own, or serve with chimichurri sauce, if you'd like.