Do you have a rooster?
A couple of the teeny tiny little spots on the wattle and front of the comb could be fly spot, but the main body and tips of the comb look like they have been pecked/nipped. You may not observe the picking/pecking during the day - watch to see if there is any drama at dusk when they are shuffling for their roosting spots - this is when you will see more picking.
You can apply a little Blu Kote to the scabs if you wish, usually pecking wounds/injury will heal up fine unless they are continually picked at.