I worked at the first KFC in north Alabama in the mid '60s and actually got to meet the Colonel. This was when he still visited every new store and supervised the training.
I can tell you that they don't season the chicken like they used to, and they don't prepare it like they used to. And it doesn't taste like it used to.
There was a reason that KFC became so successful back then. Back then the chicken was as good or better than most people cooked at home. People today don't know what they missed