They don't really seem to feel much. Also when I punch I punch a u out the web. When you punch the o out of the web I've seen it grow back. Another option I've done is to snip a slit with scissors in the web basically does the same thing.Supposedly there's only minimal discomfort if done correctly. But I'm not a chicken so I got no clue.
What you do have to watch is that another Chick doesn't peck at any dot of blood. Don't ever want a chicken to taste blood. They will never leave it alone after that till its dried and gone