My best guess is that mine are mostly duds too (except the ones that are normal shaped) I have two females that have laid eggs like this. Half of the eggs seem to be fine though.
I have also noticed that both females will start out laid normal eggs, but after about fifty or so they begin to come out smashed.
I have had other eggs laid in strings by other females, but some of these "squashed" ones are in dense strings/clumps.
Also, both females were laying their first eggs. I don't think it is an age thing, because the one that layed them a couple of days ago is about 2.5 years old and about 11 inches long.
I do know the first one was badly inbred because the breeder I got her from started with fifty eggs. He raised them and bred them. Then he took the F-1 generation and did brother/sister crosses. He then took the F-2s and did the same thing to come out with my female which had the egg problem.
Do you think the inbreeding could have caused it or maybe something else? I crossed both of them with males from two different people so the eggs themselves would not have as many genetic defects as the mother's sibblings.