Heat cooking oil in a dutch oven or large pot over medium-high heat. Brown ground turkey/chicken for a few minutes. Transfer to a bowl or plate. In the same pan, saute onion, carrot, bell pepper, and garlic for 5-10 minutes, stir occasionally.
Stir in tomatoes, water, thyme, rosemary, oregano, bay leaf, salt, and black pepper. Bring sauce to a simmer over medium heat. Cover and cook for 30 minutes.
Just before serving, add zucchini noodles to the pot and gently stir to coat the noodles. Cover pan and let stand no more than 5 minutes for the noodles to soften, then serve noodles immediately with Parmesan cheese if desired. Enjoy!