Dry pox is a virus spread by mosquitoes.
Nothing to be done about it, it will clear up in a month or so.
Best to leave it alone as secondary bacterial infections can occur.
Same goes for peck wounds, they heal up pretty fast on their own...
...once the sometimes alarming amount of blood has...
Much better pics, thanks!
That last one looks like it could be a peck wound....or dry pox(like most the others).
Looks like the front of her comb is just dirty from pecking at the ground.
I don't see anything to be too concerned about.