I don't see anything that looks like pest damage unless it's concealed in the purple pic.
For the record if explosive growth and Nitrogen are to blame for your shredded leaves, my plants and many others would and should look like torn rags flying in the wind. If your leaves are being torn, munched or otherwise, it's not the Nitrogen's fault or your growth rates.
If there's anything to say about your plants, aside from they look good, is you may want to watch your N, just to be sure you're not over doing it...not because of torn leaves...but because the plant is very green and you don't want to cause lockout from having excess N.
Otherwise, I wouldn't sweat it. Your plant looks good.