Here's what I do. The only time I make a cut on a plant during the first four or five months of its life is to pinch back a plant that is growing up into my lights, or to remove a damaged shoot. After I plant them, I let them do their thing for a while and get established. During this time I keep an eye on them looking for emerging structural problems.
I usually (depending on the variety) remove branches that are too close to the ground. If I have an Anaheim with a branch that is 6" off the ground, I cut it off. It's only going to produce fruit that rots on the ground anyhow. Small-fruited varieties aren't so much of a concern here. Keeping the canopy raised off the ground also promotes air flow (see below).
If a plant has branches that overlap or grow into each other, I'll either remove one or prune them so they don't fight for space so much. All crowded branches do is shade each other and limit air flow - which can lead to disease.
If two or more large branches originate close to each other on the main stem and grow in the same direction, I might remove or subordinate one. As these branches grow unhindered, they can crowd each other, leading to a weak attachment to the stem. This can lead to one or both of them tearing out when mechanically stressed (wind, fruit, heavy rain…).
Damaged or diseased branches obviously should be trimmed or removed, regardless of the above guidelines. Also, sometimes I will remove flowers and new growth from a plant late in the season to help already-formed pods to ripen before frost.
Aside from that, I don't see much reason to prune pepper plants. They seem to do their thing just fine without a lot of tinkering and over thinking.
OKGrowin said:
There should just be a stickied FAQ
soil, lights, ferts, organics, top/prune, water, containers etc
FAQs are good for answering questions where a group has come to a consensus on one answer. What is the N content of Miracle Gro fertilizer? How many lumens does a T8 produce...
But having a FAQ for "how to prune" or "organic or no" seem like train wrecks waiting to happen. Those questions just seem too open-ended for that kind of an approach. Having noobs constantly ask the same questions definitely gets old after a while, but getting a dozen (very) different answers can help the OP (as well as other readers) make up his/her mind on a game plan, or at least what question to ask next.