Never pick off fowl pox scabs. They are infective to other birds and if swallowed, they can cause wet pox. Birds will also pick at bloody sores and sores can get bacterial infections on top of the fowl pox virus. The lady who told you to pick off the scabs doesnt know what she's talking about. I've dealt with fowl pox and it goes away on it's own after it slowly passes through a flock. It can take several weeks to over a month to disappear.
Apply neosporin ointment around the eye to prevent bacterial infections, if some of the ointment gets in her eye, no problem. You dont want iodine anywhere near the eyes.
The lesion on the corner of her mouth is a concern. Open her mouth and look for lesion(s) inside her mouth and smell them. Then let us know if there's a foul odor.
IF lesions are NOT present inside her mouth and there is NO foul odor, apply iodine to the scab. The iodine will shrink the scab.
If there ARE lesions inside the mouth without a foul odor, use q-tips dipped in iodine and swab the lesions in order to shrink them. The lesions can spread into the throat and cause blockages and your hen can starve to death. If this is the case, I recommend giving her Poultry Nutri Drench, one drop twice a day orally for no more than 7 days straight and continue swabbing the lesions with iodine.
IF there IS a foul odor, it's canker. Treatments are either metronidazole or acidified copper sulfate. Canker is more serious than fowl pox. Just let us know if there's a foul odor in her mouth and we'll go from there.
BTW: If the breeder didnt voluntarily tell you that there were issues with her birds, dont trust breeders like that. It's best to order chicks from a reputable hatchery and raise them yourself.