I'm not sure if flakes would yield the same consistency and surprise as one would expect from a *good* pepper jack. I expect, and if that is not the same as your expectations, then that's good, that's what we do. But I expect a mild overtone of flavor of cheese and peppers... As one chews it one gets a *pow* of flavor as you connect with one of the pepper chunks. I just don't think that a dehydrated powder would supply that.
I could be completely wrong, but knowing peppers like I do, I base my supposition based on past playfulness with all things peppers.
I just don't think you could get that specific combo of flavor with flakes...
Not shooting you down of course, brainstorming is great especially in communities like this where folks most often treat each other with mutual respect. I validate your opinion, I just don't share it in this respect