Mine looked like that when they got too hot one day and wilted. I don't think it was from water on the leaves (could be wrong, but I was quite careful!), it was just that they got really hot and wilted. They did recover, and yours look like mine did after they recovered i.e. some damaged leaves but otherwise basically OK.

Fruit might be dropping off just because not pollinated? (some of mine dropped off, which I assume was just because they hadn't set - but I have quite a few set now. Mine are outside where the insects can get at the flowers)

If it was aphids you would see them - inspect the growing tips as that seems to be where they congregate, you should see something in there, or under the leaves, or on the stems. They like to be on younger growth where it is sappy. Your plants look clean in the pics but do inspect them closely, to rule it out if nothing else.

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