Actually, I thought that stuff was heavy-handed too: like, the first line about him having a face and hair like Stooben was fine, but later saying "He made Patricks apologetic face," is a bit too far: stick to stuff more like "he grimaced in apology, and once again, I was weirdly reminded of Stooben" rather than concrete assertions (it's subtle, but the devil's in the details). I actually wasn't sold on the eye thing either: "he has my eyes, except they're different colour" - then he doesn't really have your eyes now does he? I didn't mention it before because I wasn't sure if my complete inability to see family resemblances between myself and my parents (least of all with eye stuff) was biasing me, but it's still not sitting right... Either way, Chris is still not expecting the guy to turn out to be his dad, so even if he noticed the similarities, it'd just be weird coincidences to him, maybe increasingly unsettling the more he notices, but still, once the bombshell was dropped, it'd take at least a moment for everything to click together and make him realize that yes, it is fo' sho' his dad.
Maybe have a bit more Q&A before the important point. "You're a wolf?" "yes. a wolf god, but I can take human form" "so you like, were part of the wars... and..." "if you're asking about the King Max I, then yes, I was one of the ones that killed him" (dun dun dunnnn) Then later, after the initial shock's sunk in more, Chris can ask for more details about how he can be a wolf and a dude and his dad, and whatever other full story stuff you have planned.
Having kids by two different fathers doesn't make her crazy. Maybe her first husband died when she was pregnant with Stooben and she met Cyria and fell in love or whatever and had Chris with him (I have an aunt and uncle like that, only they never had kids together: only her daughter by another man, but my uncle is whole-heartedly my cousin's "dad"). Well, genetically, he's 50% Lockheard, 50% wolf god, although I guess his powers are 100% his mother's side while Tabuu has his father's side.