Being wobbled doesn't mean you have a glass chin otherwise just about every boxer in the history of the sport has a class chin. As others have said we still don't know
The fact that he is exclusively put in the ring with immobile out of shape slobs with barely any experience or professional skillset, should answer that question for you.
Jury's out on this at the moment. Sure he was rocked by Whyte, but Holyfield was hurt by Cooper, Ali was dropped by Cooper, sometimes a fighter even ones with good chins get hurt. But his chin is suspect until it gets really tested.
Price has a glass jaw and that shot that rocked AJ from Whyte would have KOd Price,he's no James Toney who has an iron jaw but neither is he in the Price mould,in the famous words of GGG "this is boxing"
just because whyte rocked him doesnt mean he has a glass jaw. it was a very good shot and probably the first time he's been hit like that. he recovered well. so far, it's not proven he has a glass jaw
As others are saying hard to tell. But people say most of the top Heavyweights have glass chins. Wilder, Fury ,Joshua. That's one area Parker has over the rest, he's got a proven good chin.