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 diced onion and minced garlic, sauté for 2 minutes until softened. Stir in the chopped spinach and cook for an additional 2 to 3 minutes until wilted. Remove from heat and allow to cool slightly.
03 - In a large mixing bowl, add ground chicken, large egg, grated Parmesan, almond flour, dried oregano, paprika, salt, and black pepper. Add the cooled spinach mixture and mix thoroughly until evenly combined.
04 - With slightly dampened hands, form the mixture into 16 evenly sized small meatballs. Arrange them spaced apart on the prepared baking sheet.
05 - Brush or drizzle the remaining 1 tablespoon olive oil over the tops of the meatballs.
06 - Bake the meatballs for 18 to 20 minutes, or until golden and cooked through with an internal temperature of 165°F.
07 - Allow meatballs to rest for 3 minutes after baking before serving.