Most of my transplants look OK - some dark purple leaves but I expect that with new transplants, some of the older leaves also have light spots on them (I'll try to get a pic later). But one of the larger ones (transplanted the same time as the others, just a couple of weeks ago, but started earlier by my cousin) had some yellowed leaves with brown spots. Wondering if this is the beginning of something bad, and I should pull the plant (though it has flowers, they'll probably drop in this heat).

Sorry, leaves were crammed in my jeans pocket underneath the potato leaves with late blight (?) - they weren't this wilted or shredded when they were on the plant. It does look like the flea beetles are moving over from the potatoes.