It does look like some of it's pox, some of it may have been pecked. If she got pecked and bled, that will attract more pecking. Keep feeders and waterers clean (the falling off scabs can spread it to others) and try to prevent mosquito's getting to the birds at night when they are roosting as that's the most likely time they get bit. Window screen over openings can help keep them out, and strips (like car wash strips) hung over doorways can help. It usually runs it's course in a few weeks with no real problems. If they get the wet form it's more serious, thankfully the wet form is less common. If there are any lesions close to eyes keep an eye on those as sometimes (not always) it can cause a secondary infection in the eye and that might need treatment. If you want you can dab some iodine or betadine on the comb, use a q-tip and don't allow it to drip into the eye. That can help dry out the lesions some. Other than that, it just needs to run it's course. The scabs will eventually drop off leaving a paler spot, and that spot over time will fade and everything will look normal again.