HELP!

My chicken 'Superman' has just laid her very first ever egg- it had a very thin shell which cracked when I picked it up.
Now she seems a bit lethargic, not interested in food but is drinking. She normally runs after me whenever I go to get food but she just stayed where she was...

Is it just the effort of laying her first egg? or do you think she's poorly? The other 3 chickens seem fine.

thanks

she has layers pellets, occasional corn, grit and access to all the garden for most of the day (so plenty greens) doesn't have oyster shell (unless it's mixed into the grit? there are definitely some sorts of shells in that). We have never had any soft shell eggs from the others but they are all different breeds. She is only about 20 weeks old we think so have never worried that she hasn't laid before. Do you think she needs oyster shell then?

I have also just noticed that she seems to be holding one of her wings funny- like it's sticking out a bit- I'm really worried.

I've just checked- there is oyster shell in the poultry grit that she has.

they can vary from hen to hen - some lay normal (albeit smaller) others lay wind eggs, some are the wrong colour and some are soft shelled.

Superman is fine now- no more eggs yet but she's acting fine, eating and drinking well. 

First eggs are often a bit thin shelled or soft, I have a hen who's first few eggs were wrinkley. She'll soon get the hang of it.

thanks for the advice- she is still fine and has layed her second egg today which was perfect.