Squatch was 13 lbs when we rehomed himIf it kept regrowing its fluff I would think it has some defect. If it ends up being a girl I don’t doubt she’ll take a long time to lay her first egg if she even lays one at all.
I got Black Jersey Giants from TSC but they turned out to be Australorps. Still good large birds and I like them. I have since bought real Jersey Giants from a reputable breeder. They’re only 2 weeks so I still have a while to see how big they get.