Yeah, I've never had one lay that young! Mine were usually around 30 - 35 weeks. And then there was the Silkie who didn't lay until she was 50 weeks old! Yes, that is two weeks shy of a year! And then she laid for 2 weeks, went broody, hatched eggs and then got killed by the bear!
My EE started at 21 weeks... my Polish at 1 year. We called her decoration for the first year because she sure wasn't contributing!