I have a 7-8 month old Cuckoo Marans hen who has laid I think 5 or 6 eggs in the last month. The first one I found and it was completely shell less. I think there were at least 2 more that I found pieces of in the coop. Then I found a very very thin shelled egg on the ground that had been eaten. I was gone for a week and my pet sitter said she didn't find any but had 2 very large double yolk eggs, but I am not sure who laid them because I have 2 that lay brown eggs. She said they didn't have super dark shells. Today I knew she was in the nest box and she left a very thin shelled egg that was mottled cream and brown. More shell than in the past but tiny and still not "regular." So I know its normal for new layers to lay soft eggs, but its been several weeks and shes not laying regularly and her eggs are still not normal. Should I worry?