The hens are either molting or (in the case of one) have just given up with the lack of sunlight. The pullets aren't quite old enough yet. So we're in that awkward stretch where you know there will soon be a lot of eggs, but absolutely nothing right now.
Last year I started stockpiling eggs but this year we've been giving all the extras to family, so there's no stockpile at all. So I had to buy eggs from the farmer's market last week and when they asked if I wanted to be notified of winter sales, I had to shamefully admit I have 7 chickens but 0 eggs.