Sorry, I should have specified... what I mean by 2 in the chute at once is that 2 eggs are being released to go down the oviduct at once, instead of just 1... it takes approx 26 hrs for the egg to grow and form to proper size for laying, and for the membrane to develop and the shell to overlay it all... if she is dropping a 2nd egg within same 24hr period, then she has 2 in the works at once and is just laying them at short intervals...
Also, the last egg you posted looked like it had a slight circular pattern on its side, that is caused by 2 eggs in the reproductive tract at the same time, touching as they grow and develop...
To also clarify, these *are not* issues common with a young layer... they are indicative of a reproductive issue in the bird itself... whether that may be not enough calcium absorption, genetic, or disease caused, it is not normal for these glitches to happen several times in a row... once, yes, not several times within a week...