I decided not to use peanuts after John's comment about them getting buried. I did toss some peanuts out - they took them, but I don't know where they ended up. Hence, the "gourmet" method of peanut butter on crackers.
It seems to be helping as you can see here - he's got some dark stubble covering up the pink skin that was visible in the earlier photo.

Here is his "before" photo.

I haven't gotten an "after" photo of the balder one, but she is looking a bit better too.
glad it s working