It might surprise you to hear that fried chicken has both Scottish and West African origins. The Scots nailed fried chicken by the Middle Ages, but the flavour was lacking. Luckily, African Americans vastly improved the bland Scottish fried chicken by creating a deeply seasoned batter. The exact fast food chain that introduced the fried chicken burger is unclear, but Chick-fil-A claims they invented the first buttermilk fried chicken burger in the 1940s. KFC has been offering chicken fillet burgers as part of its menu for several years.