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. Add onion and garlic; sauté for 2 minutes until softened. Stir in chopped spinach and cook for an additional 2 to 3 minutes until wilted. Remove from heat and set aside to cool.
03 - In a large mixing bowl, combine ground chicken, egg, grated Parmesan, almond flour, dried oregano, paprika, salt, and black pepper. Add the cooled spinach mixture and blend until evenly incorporated.
04 - Using damp hands, shape the mixture into 16 evenly sized meatballs and arrange them on the prepared baking sheet.
05 - Brush or drizzle the meatballs with the remaining 1 tablespoon olive oil.
06 - Bake for 18 to 20 minutes, until the meatballs are golden and cooked through, reaching an internal temperature of 165°F.
07 - Allow meatballs to rest for 3 minutes before serving.