Usually the less you disturb the scabs/blisters the better off you will be. If they look real nasty you can dab a bit of iodine on them, but you don't want to disturb or knock off the scabs as the virus can be spread that way. The virus will run it's course over a few weeks. The pox is most commonly spread via mosquitos. Anything you can do to reduce your population of mosquitos is helpful. I use fans in my coop so that the air is always moving over the roosts making it harder for the mosquitos to land on them. They are more likely to get bit at evening/night/early morning when the mosquitos are most active and when the chickens are stationary. I find that this reduces the incidents greatly. Dry pox general runs its course with no real problems unless you have a bird weakened by something else. Wet pox is worse.
If you have a bird with the scabs really close around the eye you should watch those for any sign of infection in the eye and you can use Terramycin eye ointment if necessary. I had one with lots of scabs around the eye this spring and she did fine, no infection in the eye. I didn't mess with them, just kept an eye on her.
You should be fine eating the eggs using normal handling and cooking precautions.