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 and sauté for 2 minutes until fragrant and translucent. Add spinach and cook for 2 to 3 minutes until wilted. Remove from heat and set aside to cool.
03 - In a large mixing bowl, add ground chicken, egg, Parmesan cheese, almond flour, oregano, paprika, salt, and black pepper. Add the cooled spinach mixture and mix until all ingredients are thoroughly combined.
04 - With damp hands, portion and roll the mixture into 16 uniform meatballs. Arrange evenly on the prepared baking sheet.
05 - Lightly brush or drizzle the meatballs with the remaining tablespoon olive oil. Bake for 18 to 20 minutes or until golden and the internal temperature reaches 165°F.
06 - Allow meatballs to rest for 3 minutes before serving.