Believe me, no one wants a seizure in their station. Ask the chef, or the server to ask the chef, to recommend something for you. This method usually produces the best results. In fact, I have eaten some wonderful meals prepared by the chef, that my dining companions longingly stared at as they ate their 'off the menu' meals. I am really tired of this meal.
Mexican restaurants seem to be the most harmless.
Be careful with Mexican sauces, many thicken with flour, and obviously flour tortillas are out. Oriental restaurants are pretty much out. Steak houses are fine, but don't forget the 'seizure' bit. If I am alone and out at meal time, I usually bring something to eat with me. Planning ahead will become your mantra as you learn to live with Celiac.