01 - Preheat oven to 400°F and line a baking sheet with parchment paper.
02 - Heat 1 tablespoon olive oil in a skillet over medium heat. Sauté onion and garlic for 2 minutes until softened. Add chopped spinach and cook for 2 to 3 minutes until wilted. Set mixture aside to cool.
03 - In a large mixing bowl, combine ground chicken, egg, Parmesan cheese, almond flour, oregano, paprika, salt, and black pepper. Incorporate cooled spinach mixture and mix until evenly combined.
04 - With dampened hands, form mixture into 16 equal meatballs and arrange on prepared baking sheet.
05 - Brush or drizzle the meatballs with the remaining tablespoon of olive oil.
06 - Bake for 18 to 20 minutes until meatballs are golden brown and cooked through, reaching an internal temperature of 165°F.
07 - Let meatballs rest for 3 minutes before serving.