01 - Preheat the 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 continue to cook for 2 to 3 minutes until wilted. Remove from heat and allow to cool.
03 - In a large mixing bowl, thoroughly combine ground chicken, egg, Parmesan cheese, almond flour, oregano, paprika, salt, and black pepper. Add the cooled spinach mixture and mix until well blended.
04 - With damp hands, form the mixture into 16 evenly sized meatballs and arrange them on the prepared baking sheet.
05 - Brush or lightly drizzle the meatballs with the remaining olive oil.
06 - Transfer the sheet to the oven and bake for 18 to 20 minutes, or until the meatballs are golden and the internal temperature reaches 165°F.
07 - Allow the meatballs to rest for 3 minutes before serving.