Hubby reported today that he has had no further trouble since he put on the bonemeal and epshome salts that I gave him to apply to the soil. He cut off all the affected plants.
Some of them were discolored even on the bottom, so that’s why I was leaning towards blossum end rot, instead of sun damage.
Glad to hear that it worked out for you !
That Bone Meal and epsome salts seems like a good cure for 'blossom end rot'; I have always preferred an 'organic' cure over chemical or mechanical cures.
Hopefully we never become to old to learn from others.
That's one of the joys of gardening , and sharing information.