I noticed that several people had read my blog from 2010 about eating gf at Frankie & Bennie's, where I said it was dull but safe. However, since then I ate at one of their stores again.
This time the waiter said they were used to dealing with food intolerances. I said I was very sensitive and they would need to take extra care - dishes straight from the dishwasher, not touching my food if they had touched bread etc. I asked for a spiced chicken dish with salad.
The food came. The chicken was not spiced - I presume they decided the spice mix had gluten or they weren't sure. I didn't get an explanation or comment.
I don't remember much about the meal. What I do remember is that I was ill for several days afterwards, a particular nuisance as I was starting a trip to France and Italy in the campervan.
So, self-perceived knowledge about food sensitive may have increased but the capacity to handle food safely does not seem to be adequate. Based on this experience I would be very loathe to eat at one of these restaurants again.