I'm sure @Bawkbok will get back to you when she's on, but in the meantime I can stick my uninvited nose in this!She has never laid back to back soft shell eggs. The last two days she laid two soft shell eggs in a row.

From the videos, it looks like you guys hang out in the chicken run. Have you observed her eating oyster shell? One of my younger layers wasn't very good about it and laid soft shell eggs. In fact, she became egg bound over it. I gave her a calcium citrate tablet once a day until she laid normally, which was about 2-3 days. Fixed her right up. Parasites and worms after definitely something to consider (have you check them over for mites?), but I'd test the calcium to see if it helps. FYI, it's not a long term solution. Excess calcium will be hard on the kidneys, but it's possible she only needs a little boost to help top her off here and there.
