Preheat oven to 350 degrees F. and cook spaghetti noodles according to package directions. Brown sausage in large skillet until cooked through. Place half of the cooked spaghetti noodles and ground sausage into a large mixing bowl. Add 3/4 of the pasta sauce and gently toss to combine. Place the red noodles into half of the baking dish. In another large bowl place the remaining half of the spaghetti, cooked shredded chicken and 3/4 of the alfredo sauce. Toss gently to combine and place in the second half of the baking dish. Top the red pasta side with the remaining red sauce and the white pasta side with remaining alfredo sauce. Top with shredded cheese and bake for 25-30 minutes until hot and cheese melted. Remove and serve warm.