poxmaker replied to your post “GIMME THOSE HEADCANONS, SIR. I MUST KNOW.”
This makes me wonder that, if we compiled a list of things we /know/ Chris eats in WK, we'd find a pattern. And if we did, that would mean that either the writers are super into subtle characterization, or it's based on the real deal.
(True he didn't get to KEEP this one, but)
(I'm not putting any other power suit-influenced ones, but I had to add grass. Half of Cheetah Racer and AGAIN in Food Chain Game. I mean, really Chris)
And a quote in Huge Orange Problem references Chris eating cereal. This isn't an exhaustive list, but this is as good as I'm getting at 5 AM after a long, LONG day of work.
As for pattern... With the exception of Happy Turkey Day which is a special occasion, Chris seems to favor food items he can pick up and go with, which is where the grazing headcanon comes from (helped by some actual grazing courtesy of gazelle power).
If it's based on the real deal, that'd be cool X3 But yeah for now, that's what I've got.