We have the same situation here! I thought Ruffles, a giant black and white EE who is 8 months old!, was laying this petite little cream colored egg. But just this week we got a HUGE olive green egg with white speckles. We have 4 ee, the first to lay was early like at 19 weeks and she lays a light brown egg. The next two lay minty blue/green eggs and this last one lays a giant olive one. Her first egg weighed in at Extra large on the scale!