@Geeker that Bell's palsy sounds exactly like what I have
I just saw your post and as soon as I read it, I was also going to say that it sounds like Bell's Palsy (but one should always see a Doctor when not sure!). I had it a pretty bad case of that (came totally out of the blue, woke up with it) when I was 26 yrs old (never had it again) and with facial exercises (I had a pretty severe case) it all went away. In my case I could not close my left eye at all, my wrinkles were all gone on the left side and forehead, when I smiled the left side of my face stayed in place and only the right side of my lips smiled.
Eating was hard cause food tened to stay in the left cheek, pain in the neck, but like I said, it all went away after a few weeks with the exercises (electric pulses with a small handheld gadget, applied to certain spots in the face moved the parts affected and kept the muscles toned), but I am not sure if they still do anything to speed up recovery. Mine happened in 1976. They did not know anymore about it then than they do now.
Good luck and don't worry, it will all work out
And congratulations on your decision and success on quitting those old cigarettes.
http://www.bellspalsy.ws/