In my view, most of the things at most of those places are pretty terrible excuses for food.
So my list would be of exceptions where I have tried and found something edible:
First though, I’m not sure why fast food chain joints have any appeal other than mental laziness, maybe a drive-through, and pre-knowledge of what kind of crud they have. I would prefer to try a non-chain place, which are run by actual people not world-devouring mega-corporations, and tend to have better and more interesting food.
But for the ubiquitous corporate selections, in my rough order of preference:
Pita Pit – our local ones are actually pretty good. They build your own design of pita wrap sandwich out of ingredients you can see.
Red Robin (not “fast” enough?) – has good milkshakes and decent fries and ok burgers that are kind of trying to be good (depends on the specific place, I think).
Fred Meyer and Safeway – their delis make actual sandwiches out of actual ingredients. They also have very cheap rolls and bagels, and of course actual food such as vegetables and fruits and juices and so on.
Panda Express
Panera – there are some ok things but I’ve found it annoying and overpriced for what it is
Starbucks – coffee is not great and food is expensive but they have some decent things – I’d tend to get a chai latte and/or a bagel, though there are some more expensive foods that are better but more overpriced.
Subway
KFC – fried chicken is ok it’s just not very healthy and overpriced
Taco Bell – the plain crunchy tacos are ok, and some of the simpler gordita-like things, but their “nacho” cheese is in some other things and I find that to be absolutely terrible
THIS IS ABOUT WHERE MY BAR IS – I USUALLY WOULD RATHER NOT EAT BELOW THIS
Chipotle – I used to like these when I first tried them, over 15 years ago, before i learned they were owned by McDonald’s and heard some horror stories. I haven’t been in a loong time, but I might try them before I’d resort to the ones below, if that was the only choice available.
Tim Horton’s – I’ve only tried a bit in Canada and it had some sort of edible things
Wendy’s – a salad can be edible, and maybe some other things but I would rather not eat
Little Caesar’s – Not great pizza but it’s only $5 for a whole pepperoni pizza. Ok if starving.
Pizza Hut – has some not very good pizza but it’s pizza and I’ve had worse
Crispie Kreeme – better than industrial donuts but cost more.
McD’s – egg muffin ok, fries greasy but ok, pies are “sugar-coated gut bombs” but so so.
Dunkin Donuts – I’ve almost never been – just a couple of times taken by someone else. They seem just like industrial donuts. I’d rather go to a Safeway and probably get a 59-cent cheese bagel instead.