This link has a photo near the bottom that shows the difference in color of a yellow-legged hen that is not laying and one that has laid a lot. You'd hope a qualified judge would know this. I don't know if this is your problem or not.
Pigmentation to Evaluate Laying
http://www.ca.uky.edu/smallflocks/Factsheets/Evaluating_egg_laying_hens.pdf
Pigmentation to Evaluate Laying
http://www.ca.uky.edu/smallflocks/Factsheets/Evaluating_egg_laying_hens.pdf