Preheat oven to 400°F. Line a baking sheet with parchment paper and spray lightly with cooking spray.
In a large bowl, combine ground turkey, breadcrumbs, egg, Parmesan, garlic, parsley, oregano, salt, and pepper. Mix gently until just combined.
Form mixture into 16 meatballs (about 1½ inches each) and place on prepared baking sheet.
Bake for 20 minutes until meatballs are cooked through and lightly browned.
While meatballs bake, heat marinara sauce in a large skillet over medium heat.
Add cooked meatballs to the marinara sauce and simmer for 10 minutes to let flavors meld.
In the last 2-3 minutes, add zucchini noodles to a separate pan and sauté until just tender.
Serve 4 meatballs over 1 cup of zucchini noodles with marinara sauce. Garnish with fresh basil and extra Parmesan if desired.