So far it looks like Jeff's the ONLY one leaning towards it being an AFD joke...
It looks to me like the other sites that reported this are believing it and either just didn't look up what the character was that SideShow listed a preview of, or they really REALLY think a giant chicken is a good character choice for a Star Wars figure... I'm going to go with the previous guess on that though, and that nobody looked into what they were posting on their front page.
The irony of them doing a 12" chicken from some obscure EU before any Imperial Trooper, Vader, Lando, Yoda, Emperor, Chewie, or other "main" character though... That's funny. It's probably one of the better jokes anyone has ever pulled and it required work to figure it out too... Smart.
That's great though that they really did get at least a few people with the joke... It's a hell of a lot better than some of the lame stuff we've seen from years past.