Hi AdotKarl. Your plants in general do not look too bad to me. I'm not familiar with the Nitrozyme product, so I can't offer any specific advice on that one. Just remember to apply a less concentrated mix then recommended, since peppers don't need a lot of fertilizer. Your slow down in growth could be related to the fact that you just repotted the plant. The plant is probably getting used to the new environment and focusing on putting out new roots, since it has more room. I've provided a few more videos for you on pepper leaf issues (pictures are always better than words).
https://www.youtube.com/watch?v=a4KkRqGmNcc