He should be killing it right now and he isn't. Not sure what's going on.
Two things from I've seen:
1. Though he's still making many of the high quality plays he did last year, he's also trying to out-skill teams. Some of the games I've watched, half the things he was doing weren't translatable and ended up simply wasting time before giving up the puck. Now, he's not as bad as Drouin there since he's much more skilled
and he's at least doing other things well.
2. Less line chemistry with Zegras. They don't complement each other very well, even if both are pretty high smarts players. He benefits from Hughes, but not much the other way around.
His defensive game has me worried though, I haven't seen improvement here, which is what I'd have wanted to see instead of trying to make highlight of the night type plays. Working on translatable plays and a good defensive game would have him a solid 1st OA pick.