I have assumed that Esther has a Pea comb, it doesnt look like any of my other chickens combs at her age and it does look like what I expect a pea comb to look like.
This is esther at 16 weeks, her comb has not matured yet and at 20 weeks looks largely the same as it does in this pic.
This is Emerald at 13 weeks old. The Australorps matured earlier then the EE and by 20 weeks had a fully mature comb and wattles.
I am not an expert on pea combs but with the riges I see on your EE, I'm thinking that might be a single comb.
How old is the bird?
When I said that having more EE traits seems to give you a better chance of getting blue green eggs, that doesn't garentee anything one way or the other, there are plenty of examples of chickens that violate that statement both in this thread and on the board on general, but it does seem that the more EE traits the bird has, the more likely it is to produce blue green eggs, just not 100 %
Others may disagree.
Added: looking again at your EE's comb, im a little baffled, my eyes arnt that good and that pic is very close up... (nice job on that) maybe its the closeness of the pic that is making the ridges seem more prominant then they really are;
Either way, your chicken does have beard and muffs... what color are the legs?
Added: the comb on your Ee is not mature yet, I can tell you that much.. and it's going to look alot different. If it happens like it did with my older girls, the change will happen suddenly, almost over night.