01 - Preheat oven to 400°F and line a baking sheet with parchment paper.
02 - In a skillet over medium heat, heat 1 tablespoon olive oil. Add onion and garlic, sauté for 2 minutes until softened. Stir in spinach, cook another 2–3 minutes until wilted. Set aside to cool.
03 - Combine ground chicken, egg, Parmesan, almond flour, oregano, paprika, salt, and pepper in a mixing bowl. Add cooled spinach mixture and mix until uniformly incorporated.
04 - With damp hands, form mixture into 16 small meatballs and arrange evenly on prepared baking sheet.
05 - Drizzle or brush meatballs lightly with remaining tablespoon olive oil.
06 - Bake for 18 to 20 minutes or until meatballs are golden and cooked through with an internal temperature of 165°F.
07 - Allow meatballs to rest for 3 minutes before serving.