Were it not for my shred of decency, I would harass the living hell out of you until you submit this piece to Jessica Shea (BS Angel) at Halo Waypoint. Funny thing is, his face matches up with his appearance's description in the fiction.
Strong jaw - check.
Short, brown hair - check.
Serious eyes (they're pale blue in the fiction) - check.
Looks so handsome, Cortana had to make a comment about it when analyzing him with Dr. Halsey - check.
I think his skin color's a little paler than that, but otherwise, this is fictionally accurate! Pair this with the fact that after being in cryo-sleep for so long in the fiction, he has the body of someone around his mid 30s, despite being around for 45 years (still younger than Cpt. Lasky), this might as well be Master Chief unmasked!
Quick, somebody send this to 343i; make sure they don't make him ugly or old if they ever unmask him (they might overlook the fiction and give us some random Average Joe)!