Possibly nothing? Barred Plymouth Rock Leg

[Miriahbrown]

My daughter brought me one of our plymouths and is very concerned about her leg. There's a spot that is black that didn't used to be black? They're just now laying eggs and maturing fully and I didn't know if it was a normal change and can't find anything online? The chicken is acting normal, just has two spots that are black that didn't used to be black

 

[nuthatched]

Normal, think of them like freckles

 

[Eggcessive]

The first one looks like the scale is missing, and she might have been pecked on both. I would not worry about her.

 

[talkinboutchickens]

Totally normal, just coloration. Her parents probably each had different colored legs.
Tons of my chickens have that.