Oh, yes. She has the start of pox. She will look much worse in a few more days, so brace yourself. There is a vaccine available for fowl pox if you live in an area where it is often a problem. It needs to be redone each year, though.
Fowl pox is caused by a virus carried by mosquitoes. It has 2 forms-wet pox and dry pox. Your bird has dry form, which is a nuisance virus more than anything. It will look quite nasty for about 3 weeks and then heal on its own without intervention. The good news is that once birds are exposed to the pox they will acquire a partial immunity from it meaning that although they may get pox again the future, it will not be as bad as the first time. The biggest risk with dry pox is the risk of secondary infection in the nodules. To prevent that you can dab the nodules with straight iodine/betadine each day when they are at their worst. This will help to dry them out so they heal quicker and will prevent infection. Don't feel like you have to do anything to them, though. The chance of infection is very small, and the nodules will likely heal on their own.