We have been here several times (and to other Pho locations), with one coeliac vegetarian in the party, and have always been delighted. The food is excellent. Most of it is GF, and anything that isn't is clearly marked and well explained by the staff. There are plenty of vegetarian & vegan menu items, so no-one needs to feel hard-done-by.
— Very
— Gluten-free items are marked on the main menu
— Most/All
— Excellent