Considering that you live in Chicago I think that your peppers look wonderful! You are obviously a very good gardener! Or, in other words, your peppers look better than mine do.
Sigh.
It is all this rain: the weatherman says that we have gotten rain 2 days out of 3, and only 2 of my peppers have survived the wet. Neither one of mine looks as good as your pepper does. I don't think either plant has bloomed, yet, and the largest is just starting to get bushy! This has just not been a good year for peppers in the center of the USA, as we haven't been getting much sunshine..
But, since you say that last years peppers had trouble also, it is not ONLY the excess rain! The fish emulsion would have given them nitrogen, which you say only helped a bit. Have you given them any other types of fertilizer? Midwestern soil often needs some phosphorus and potassium as well.