Normal and will correct itself as her laying internals mature. There is a lot going on to make the final product of an egg. Pullets are still maturing and any one or two areas on this assembly line are not ready to perform it's job you get odd eggs. Soft, misshaped, areas of extra calcium deposits, double yolkers, eggs within eggs...you name it.
When it comes to egg eaters I'm not worried. That bad behavior can be chicken specific, maybe a protein deficiency in feed and in my experience doesn't occur if a chicken eats an egg or shells. If I have an ultra dirty egg or an egg got frozen in nest before collecting I throw it on the ground to smash open for the birds. They love it and it does not prompt them to break an egg to eat it. If egg shells are too thin and break in nest they eat them. I'm OK with that as it's normal behavior. Once out of pullet's first eggs phase if the shells are still too thin add a calcium supplement free choice for the birds. Layer feed has all they need. Being a person that doesn't use layer feed, we toss oyster shell on the ground by handful once or twice a week. If shells are getting too thick cut back, too thin toss more on ground. Free choice calcium supplement the layers will eat if they need it. By doing free choice I've never had too thick of shells. The layers know if they need it. Do slack or forget to give them enough and will be reminded when thinner shells start.
Edited by Egghead_Jr - 5/8/16 at 7:38am