Do a search for "gluten-free" or "celiac" -- do any of the options appeal?
I know that Otto has gluten free pasta on request, Keste has gluten free pizza nights (Mon/Tues), and Blue Smoke has a gluten free menu. I think S'Mac or Mac Bar or perhaps both (?) do gluten free mac and cheese. Kuma Inn has a separate gluten free menu. Friedman's in Chelsea Market is completely gluten free.
116 East 27th Street, New York, NY 10016