To make this Creamy Garlic Pasta gluten free, replace the spaghetti noodles with certified gluten-free spaghetti or another gluten-free pasta. Verify that the chicken broth, Parmesan cheese, heavy cream, butter, olive oil, dried parsley, salt, and black pepper are gluten free. Cook gluten-free pasta carefully, as it may require less time and additional broth to prevent sticking. Use clean cookware, utensils, and prep surfaces to avoid cross-contact with gluten-containing ingredients.