Bring a large pot of salted water to a boil. Add the whole wheat spaghetti and cook according to package instructions until al dente. Reserve ½ cup of pasta water, then drain the pasta and set aside.
In a large skillet, heat the olive oil over medium heat. Add the sliced chicken sausages and cook until browned and heated through, about 5-7 minutes.
Stir in the minced garlic and cook for about 1 minute until fragrant. Then add the halved cherry tomatoes and dried oregano; sauté for another 2-3 minutes until the tomatoes soften.
Add the spiralized zucchini to the skillet, tossing to combine. Cook for about 3-5 minutes until the zucchini noodles are tender yet still slightly crisp.
Add the cooked spaghetti to the skillet. Pour in some of the reserved pasta water (1-2 tablespoons at a time) to help create a light sauce. Toss everything together until evenly mixed. Season with salt and pepper to taste.
Remove from heat and transfer the Chicken Sausage Zucchini Pasta to serving plates. Top with grated Parmesan cheese, if using, and garnish with fresh basil leaves.
Notes
Feel free to add more vegetables or adjust the seasoning to your taste.