I'm not gonna pay for fried chicken with bitcoin, period, unless I'm starving and have no fiat in my ppcket, bank, or hidden under the mattress. I'm not exactly the definition of a hodler, but it strikes me as a big waste to buy something with bitcoin that's going to end up in the septic tank. Makes sense, right?
The other thing is that it's totally impractical, with the outrageous fees and confirmation times. That's going to be some seriously cold chicken after 1 confirmation--and I can pay with fiat for free.
It is not literaly buying fried chicken with bitcoin. What kfc wants to do is to let investors have a share in their business through a blockchain just like buying a franchise of kfc through bitcoin. Though it is just a fraction of the shares of their market investing in blockchain makes them evade some of the taxes they are going to pay to the government.