Creamy Chicken Alfredo

Ingredients : 2 pounds skinless boneless chicken breasts cut into chunks salt and ground black pepper to taste 2 (16 ounce) packages thin spaghetti 4 (15 ounce) jars Alfredo sauce 2 tablespoons Italian seasoning 2 tablespoons garlic powder 2 tablespoons chopped onion 2 tablespoons chopped fresh basil 2 tablespoons salt...