Also if you would have asked me this like 2 years ago, I would have said my height for my age, but now since I stopped growing my height is pretty average.
Out of all the major fast food chains, I would pick Wendy's. However, if we're referring to every restaurant that happens to be a chain, there are too many to name. Caspers Famous Hotdogs and Burger Meister are both local chains that only have a few locations.
Most of my favorites are mostly not really chain, most of them hang around one part of the country with lots of restaurants.
Although I have to go with Steak n' Shake. The reason most of you probably haven't heard of this amazing place is probably because you don't live in the East.