Is this a normal comb?

[Cluckcluck2000]

Just noticed one of my RIR’s comb looking strange. She seems to have some dark spots on her comb which weren’t there previously. They do look a little bit darker and more defined in person. Any idea what this could be? Or am I totally overthinking it and it’s completely normal

 

[Aapomp831]

Looks totally fine. The little dark marks are just from pecking - the normal kind used to establish pecking order.