Unless you are happy with a less than appealing salad, this is not a great option, although my husband enjoyed his pasta.
I've eaten here twice since going GF. Ordered the union grill chopped salad and union grill chef salad, both with house dressing. Told my waitresses to make sure my meal was GF. Didn’t get sick either time. Not sure what other foods can be prepared GF there. Not sure if celiac friendly.