– 3 chicken breasts  – 2 tsp italian seasoning – 1/2 tsp garlic powder – 1/2 tsp onion powder – 1 tsp garlic salt – 1 medium yellow onion  – 1 tbsp garlic paste – 16 oz dried rigatoni pasta – 1 24-oz jar Ragu Old World Traditional Pasta Sauce – 24 oz chicken stock – 1.5 cup mozzarella cheese  – 1/2 cup Parmesan cheese – 2 tbsp fresh parsley  – salt and pepper to taste