To the original poster, that does not look like traditional bacterial leaf spot, and with the leaves being wet all the time i'll bet it's something fungal.
With fungal issues, copper is of limited use, a sulphur-based spray would work better. Some products combine copper and sulphur together, you would look for "copper-sulfate" on the ingredients label. Other products, like Serenade, would work on bacterial and fungal issues as well.
In the meantime, i would cut off the affected leaves, just don't defoliate the whole plant. If they are in containers then space them out. And no more wetting leaves unless you are spraying a fungicide, that's how the problem starts, bottom water only, pepper and tomato plants like their leaves to stay dry.
Also: let the plant get it's nutrition the way mother nature intended, via the roots in a good balanced soil, there's no need to "feed the leaves" all the time. Sometimes is ok, and more experienced growers eventually get a knack for when it is needed.