Hi Bronson, and welcome to the forum.
What strange hens! Could we know a bit more about them?
- do you know what breed they are, or what sort of hybrid?
- could they possibly be genetically related?
- where did you get them from, ie was it a commercial breeder or a firm that sells lots of hens, or were they bred at home by you or a friend?
- how big a run do you keep them in ( dimensions) and what sort of coop?
Do you feed them anything else apart from pellets and mealworms, - eg greenstuff?
Have they ever been wormed with Flubenvet, and if so, how long ago?
Do you have any other hens, and if so, how old are they and do they lay eggs?
Are they your first hens, or are you a more experienced keeper?
We may be able to make some suggestions if we know a bit more about your setup. One hen that has never laid isn’t too uncommon, but if it’s more than one, things might be a bit more complicated.