Preheat the oven to 350 degrees F (175 degrees C). Spray a 24-cup mini muffin tin with cooking spray.

Mix together turkey, drained spinach, feta cheese, paprika, onion powder, salt, and pepper in a large bowl until well combined. Roll into 24 meatballs and place in the prepared muffin tin.

Bake in the preheated oven until meatballs are cooked through, 20 to 25 minutes. An instant-read thermometer inserted into the center should read at least 165 degrees F (74 degrees C).