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; cook for 2 minutes until soft. Add chopped spinach and cook 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, Parmesan, almond flour, dried oregano, paprika, salt, and black pepper. Add the cooled spinach mixture and blend until fully incorporated.
04 - With damp hands, form the mixture into 16 small meatballs and arrange them evenly on the prepared baking sheet.
05 - Brush or drizzle the meatballs with the remaining 1 tablespoon olive oil.
06 - Bake in the oven for 18 to 20 minutes, or until the meatballs are golden brown and reach an internal temperature of 165°F.
07 - Allow meatballs to rest for 3 minutes before serving.