I remembered this thread when I ended up with inedible chicken this week.
TJs organic chicken breast (bone-in) poached Cantonese-style the way I have a hundred times before — un-chewable! I thought maybe it was under-cooked, so I took a small piece and cooked it a bit more. Nope, that wasn’t it.
The legs in the same pack were fine.
First encounter, I had no idea what people meant here but it was completely inedible — couldn’t be chewed