Hmmmm...I with Egghead Jr. on this one...I am seeing yellow skin too...although a number of breeds have young chicks that have yellowish type skin that changes pigment as they grow. Hatcheries are also notorious for having wrong leg color.
There are a lot of chicks that look similar, but because the comb looks so very dark, I'm wondering if it might not be a Black Sumatra. I can't see the comb well enough, but it could be a pea comb (hard to see difference at this age). Black Sumatras have a stage where the wing tips turn white before they come in black.
Time will tell if Black Australorp, Black Sexlink (possible but usually legs are grey/black), Black Sumatra, and even small chance Blue Andalusian (though legs are usually grey) as there is some lightening in the down which could indicate some bluing.
LofMc