Those are BIG eggs!!! Are they from red or black sex links? My black sex links just start laying a few days ago, and their eggs are small!!! I know it will take awhile until they lay bigger eggs. How old are your sex links?
They are 5-1/2 month old red sex links. One of them started laying at 16 weeks, and 4 of them just over 18 weeks. One of them hasn't started laying yet, but I don't think it will be too long. Yes, they will get larger, as you can see.