I would be tempted to say that it could be fowl pox, a virus transmitted by mosquitoes. In baby chicks the scabs can grow quite large. Usually one does not want to remove fowl pox scabs, sine the scabs can transfer the pox virus, but you will need to monitor the chick to make sure it can see to eat and drink. Or you will need to try feeding it moistioned chicken feed several times a day. Povidone iodine or alcohol applied carefully avoiding the eyes may help dry it out. Pox lasts about a month and then chickens become immune to it. Here is a good article about fowl pox if you think that is what this is:
https://the-chicken-chick.com/fowl-pox-prevention-treatmen/