Place sundried tomatoes on a pizza base, then add half cooked fettuccine, cheese, bacon, chicken, cream sauce, mozzarella and parmesan. Cook at 475 F for 7-10 minutes. Garnish with parsley.
Saute onions in the butter on a saucepan over a low heat. Add the fresh and sour creams, salt and pepper. Bring to a boil. Remove from the heat to sit for a while and then drizzle over the pizza.