01 - Preheat the oven to 400°F and line a baking sheet with parchment paper.
02 - In a large bowl, mix ground turkey, egg, breadcrumbs, garlic, parsley, oregano, salt, black pepper, and Parmesan cheese until just combined.
03 - Shape the mixture into 16 equal meatballs and place them evenly on the prepared baking sheet.
04 - Bake in the preheated oven for 18 to 20 minutes until cooked through and golden on the outside.
05 - While meatballs bake, heat olive oil in a large skillet over medium heat, sauté the onion until softened, about 3 to 4 minutes, then add garlic and cook for 30 seconds.
06 - Add crushed tomatoes, basil, oregano, chili flakes, salt, and pepper. Reduce heat and simmer gently for 10 minutes, stirring occasionally.
07 - Transfer baked meatballs into the sauce and simmer together for 5 minutes to blend flavors.
08 - Heat olive oil in another skillet over medium-high heat, sauté zucchini noodles for 2 to 3 minutes until tender, seasoning with salt.
09 - Plate zucchini noodles, top with meatballs and sauce, and garnish with additional parsley or Parmesan as desired.