01 - Preheat oven to 400°F and line a baking sheet with parchment paper.
02 - Combine ground turkey, egg, breadcrumbs, garlic, parsley, oregano, salt, pepper, and Parmesan in a large bowl. Mix gently until just combined.
03 - Shape mixture into 16 equal meatballs and arrange on the prepared baking sheet. Bake for 18 to 20 minutes until cooked through and golden.
04 - Heat 1 tablespoon olive oil in a large skillet over medium heat. Sauté onion for 3 to 4 minutes until softened. Add garlic and cook for 30 seconds more. Stir in crushed tomatoes, basil, oregano, chili flakes, salt, and pepper. Simmer for 10 minutes, stirring occasionally.
05 - Transfer baked meatballs gently into the tomato sauce and simmer together for 5 minutes to meld flavors.
06 - Heat 1 tablespoon olive oil in another skillet over medium-high heat. Add spiralized zucchini and sauté for 2 to 3 minutes until just tender. Season with salt.
07 - Plate zucchini noodles and top with meatballs and tomato sauce. Garnish with extra parsley or Parmesan if desired.