No expert here, but I think your method is safe. High heat right from the get go! Not really different than putting some rub on 'em and putting them into a preheated oven.
But, you really should try to expand the 'ol horizons and try brining some. With brining you can permeate the meat with whatever flavours you like. There are some really good brining recipes on this site, so do a search for them and I'm sure you'll find something that strikes your fancy! (Just be sure to get the go ahead from your better half.)
As far as using the thighs , I think they are so much better than wings. I very often do drummies, wings are just too much work (and more expensive) than thighs or drummies.
I'd also suggest that you replace the Pam with a coating of virgin olive oil, a nicer flavour in my opinion and it will crisp up the skin.
Hope you post the pics.