I really like New York Burrito and, once in a great while, I go to Subway (not a sandwich fan).
Occasionally, I go to Burger King. I'm able to tolerate the Tendergrill Chicken Sandwich without lettuce or tomatoes. The chicken and bun are safe although they contain MSG, so be careful if you're MSG sensitive. You can see ingredient listings here: BK Ingredients I also prefer it without whatever sauce they're using; right now it's a Honey Mustard Spread, which contains egg yolk (ick!). At BK, you can also order bottled water. Now that I'm stable, I do enjoy the occasional small order of fries, but I definitely would't recommend it to anyone who's sensitive to fat, new at the IBS diet, or is trying to eat healthy.
After checking out Jack in the Box ingredients online, I'm disappointed to report that almost everything--from the chicken to the buns contains dairy. This would explain why, back in college, I would get severe attacks even though I thought I was making safe choices. Also during my college years, I used to frequent Panda Express and order their mushrooms w/ chicken w/ a large side of steamed rice--this was all I ate when the cafeteria didn't have any safer options. I don't recall ever having an attack from it. I haven't eaten at either place in years.
In general, I have problems with every other fast food place. It's only recently (and very rarely) that I've tried eating at BK and New York Burrito.