I get those flopped over center immature leaves, too. I just assumed it was the heat here in summer.
Sue - I never took any photos of my yellow plant. I tend to sprinkle Milorganite around my beds to keep the rodents at bay. Seems it may have solved the problem. We had rain recently so the Milorganite got soaked in. The plant is now turning green from the base up through the upper sections of the leaves. So it was apparently malnourished. My bad. Odd though that it was the ONLY plant on that side of the raised bed showing Chlorosis. Somehow it didn't get fertilized when all the others did? Geez....