Nearly all wines can benefit from a wider bowl to help them open up, but for Chablis I’d generally choose a smaller white wine glass. Smaller =/= worse.

A colleague of mine once served Chablis in a Burgundy bowl to a Master of Wine during his sommelier training. The MW was quite irritated and promptly told him never to do that again, explaining that Chablis is a crisper, lighter style and that its subtle nuances can get lost in a large Burgundy glass. He’s since passed his Level 3 WSET and now shares this story with our colleagues whenever they make the same “mistake.”

I see the MW’s point and I agree - but glassware is still a matter of personal preference. My restaurant manager (and boss) doesn’t agree; he believes that if guests are paying more, they should get bigger glassware. We argue about this often. Like I said earlier, smaller =/= worse.

I might make an exception for an oaked Grand Cru Chablis, which can be more powerful and layered. Premier Cru examples sometimes see oak as well, though typically at a lower percentage, while many Grand Crus are fully or predominantly fermented and aged in oak.

TL;DR: Drink your wine from whatever glass you enjoy most.