Chicken breast meat in alfredo sauce on rigatoni pasta with parmesan cheese and parsley, chicken alfredo

Alfredo sauce (milk, sour cream [cultured grade a milk, grade a cream contains less than 2% of modified food starch, sodium phosphate, guar gum carrageenan, soidum citrate, locust bean gum, potassium sorbate (maintain freshness)], parmesan cheese [pasteurized milk, cheese cultures, salt, & enzymes, powdered cellulose (added to prevent caking), natamycin (a natural mold inhibitor)], unsalted butter [cream, natural flavoring], olive oil, white flour, garlic), pasta rigatoni (semolina and durum flour), grilled chicken (chicken, water, contains 20 or less of the following: carrot powder, chicken stock, flavors, garlic powder, maltodextrin, natural flavor, rice starch, salt, sugar, vegetable stock [carrot, onion, celery], vinegar), parmesan cheese (pasteurized milk, cheese cultures, salt, & enzymes), powdered cellulose [added to prevent caking), natamycin [a natural mold inhibitor]), parsley