Dickey's is not listed on Fast Food Source (yet) but it should be. While not really fast, it is about as fast as Subway, Chipotle, or other assemble-while-you-wait establishments. And man, is it worth the wait.
Juicy BBQ beef, chicken, ribs, etc. Sandwiches or just slabs of meat on a plate. It's all good. Here's one of their daily specials - this one is the BBQ ribs plate with two sides and a drink for something like $7.99.
They have a different special each day, so it's worth repeated visits. Plus they have those cool yellow plastic cups. Expensive. But just another nice-to-have like their fake silver plastic dinnerware. Fun.