Perhaps this isn't a shocker because it's the highest-ranked chicken chain in the nation, but Chick-fil-A's founder, Truett Cathy, actually invented the chicken sandwich in 1964. While running a restaurant called The Dwarf Grill in an Atlanta suburb, Cathy turned a shipment of chicken breasts that were too large to serve as airline food into a quick meal for shift workers. After some experimentation, the chicken sandwich was invented.