Issues with McNugget's eggs

[miamitj]

So I've had McNugget for about 6 weeks now. I have no idea what her age is as she is a rescue. She is probably a New Hampshires Red.

This Friday she finally laid her first egg - well, she actually laid two. Both eggs had very soft shells. Saturday she laid a good, yet small egg. Sunday two more, one soft and one small good one. Monday, another good small egg. This AM I have a small soft shell egg.

I'm going to up her calcium but it's the something else I should worry about? Other than the small and soft eggs she is very active and alert. Her is her pic:

 

[Poultry parent]

A Pullet that's just starting to lay, generally lays odd eggs, once she's been laying for a while, they'll get normal