No joke. According to this site, it's being tested in a select few KFCs. I dunno, I always dreamed of having a plateful of just chicken skin, but this looks a little less appetizing than i thought it would. And the person reviewing it didn't like it a bit.
UPDATE: OK, so.....fake. Still, I'd love to try one. Maybe I'll just stick to perusing TIWYF from now on.