Q.can I prune my ghost pepper plant
I live in central Florida and we get frost in low lying areas. I moved the plant inside to avoid frost. This plant produced fruit this winter and is about to produce again. The problem is that it is now 7 feet tall and shows no sign of being done. It cannot stand on its own.

Use clean garden tools to prune your pepper.
Remember that the branches can break easily so handle the plant carefully.
Remove any dead, diseased or damaged stems.
You can thin the plant as desired to open up the canopy.
Clip the ends of branches as needed to keep maintain a good shape.
If the plant is heavy on one side, trim to maintain balance.
You can watch for blossoming, if branches do not produce flowers, they can be pruned away to keep energy on pepper formation.
Stake you plant to support it's weight.
https://www.gardeningknowhow.com/edible/vegetables/pepper/growing-ghost-chili-peppers.htm