top picture, right plant, left most leaves are classic.... classic..... over fertilizing, the leavers are literally tearing themselves apart and barfing out the possible high salt content (the burning, browning, dissolving on the inside of the tear).
I don't know if flushing with just plain water with flush out any left over fertilizer in the soil, so nothing else can get ingested. The damage is down to the leaves and the only thing you can do is selectively snip off brown or severly damaged leaves but don't go stupid and snip everything, give the plant time to adjust to removal of the few leaves, then in a couple of days remove a few more of just the severly damaged leaves. New growth will soon follow. Perhaps give them a misting of Epsom salt 1/2 teaspoon in a common sized spray bottle.
My plants are inside and I too can suffer the effects from over fertilizing and it is all unintentional. Perhaps, using chemical fertilizer that was not completely dissolved, first plants that get watered have a lighter content of the fertilizer and as you get further down the water container the concentation goes up. I have to be extremely careful with Plant Prod Tomato, Vegetable fertilizer(15-15-30), the label says concentrated water soluable fertilizer and everytime I use it, I get leaf tearing. I have cut down on the recommended dosage, I have let the mixture sit for a few days, constantly stirring it, and then again just before using it. Yet, I use Plant Prod Plant Starter(10-52-10) on new sprouts and no problems.
What brand of fertilizer are were used and what is its N-P-K make up?
.....isn't it too cold for aphids at this time in Wisconsin?