I used to work at Noodles and they do not avoid cross-contamination well. Unless you make a huge deal out of your allergy they will treat it normally and even then C.C. may have already taken place in the coolers, sauces, and kitchen appliances. They try their best but it's still a noodle place.
— Not very
— Gluten-free items are marked on the main menu
— Most/All
— Good