Aphids can cause leaves to curl. Have you looked for aphids or other sucking insects underneath the leaf?

I,ve checked for bugs and can not find any. I tried to put up some pictures of the plants but I guess I don,t know what I,m doing.

Sometimes irregular watering can cause leaf curling. Any chance you could post some pictures?

New growth on bell peppers seems to look fine. Plants seem to be a bit stunted, but look like they will be productive.
The eggplant looks like it may have some rot on the main stems coming out of the ground. I mounded it like I was told to do, but it and the cucumbers that I planted don,t look very good. I also have white radishes that have 10 inch or better leaves on them, but no radishes have formed underground. I don't know if they just haven't started to produce yet or if there may be a problem. I think to start with I was over watering everything.