My boyfriend and I are having lunch with his parents tomorrow. They'll be parking their car near 53rd and 1st, and we were hoping to go for lunch somewhere in the area. His parents are not the most adventurous eaters - I think the most exotic that they'll eat is sushi (at least one of them will) and I have celiac disease/am gluten intolerant, so I'm looking for somewhere that will accommodate me as well. Otherwise, I think they'd just go for bagels. His dad suggested the diner we usually go to, but I'm looking to branch out a bit. I'm looking for something moderately priced (let's say under $20pp) that doesn't need a reservation. Any suggestions? Thanks!