probably just a kfc marketing scheme. but even so, a lot will still be using it since it is new and cool. plus, it would give the buyer some bragging rights towards his friends and family. lol. which in return can be really good not just for bitcoins but for the crypto world as a whole. which is why i think all in all, this is pretty much a good thing to happen and a win win situation between kfc and the crypto world. and when lightning networks come into place, this will really be a huge thing. i will be expecting a lot of other food chains to be doing the same. even coffee shops and other services since obviously, many people will be digging into this once fees and confirmation times are not a problem anymore.