There's lots of disagreement about fertilizing pepper plants - trust me! Many of the experienced growers here advise avoiding much use of nitrogen. I like to use it, but not once plants start blooming.
Tomatoes - they like nitrogen, but again, not after they start blooming.
I read a study today though it was about sod and not peppers or tomatoes. It said the use of small amounts of nitrogen actually had an adverse effect on chinchbugs, but as the dosage increased, so did the number of varmints.
Mike