Preheat an oven to 400F and begin bringing salted water up to a boil for cooking the pasta. Cook the pasta for 6 minutes once the water comes to a boil.
In a large skillet, heat the olive oil over medium-high heat. Once hot, add the mushrooms, zucchini, and red bell pepper to the skillet. Sprinkle with a pinch of salt and pepper and sauté for 5 minutes.
Add the chicken sausage, garlic, and cherry tomatoes to the skillet. Stir and sauté another 5 minutes.
Turn off the heat and add the marinara, light alfredo sauce, and cooked pasta. Stir everything together and top with the mozzarella, parmesan, and crushed red pepper.
Bake for 15-20 minutes until the cheese is melted and bubbly.