I didn't mean all chicken. In all my research, though, I've read that leg quarters don't have the right calcium-meat ratio.
Whole prey is the only thing that will give you the right bone:meat ratio. Chicken quarters are pretty good though, they are mostly meat. Chicken backs are too boney, so are necks, so are wings. Chicken legs are too small. Yeah, whole chickens are best and you should feed them whole whenever possible, but quarters are usually cheaper Of the chicken I feed, I feed about half whole chickens and half quarters, because I buy whichever is on sale at the time.

Oh, about chicken. I think Jasper is alergic to chicken, but, he has only had it occasionally(cooked). Do you think raw chicken would have the same effect?
Probably not. Mandy was allergic to every meat cooked except for fish, and she is fine with anything on raw. It is possible though, so just look for his symptoms and if he's allergic, try him out on something else.