Welcome to BYC. Where do you live? Fowl pox, a virus from mosquitoes can cause scabs to form around the face, comb, and wattles. It is possible that pox is what you are seeing, or pecking from the other chicks. Secondary bacterial infections can be a complication. The bubbling in the eyes could be mycoplasma, or MG, and that can be a secondary infection of pox, or a respiratory disease. Have you noticed any sneezing or gasping? I would go to your local feed syore and purchase Terramycin eye ointment and apply it twice daily inside the eyes. Tylan 50 injectable is good to use for respiratory diseases.