hi everyone i'm wondering if you can offer any advice on how to rejuvinate my thai dragon pepper plant.

it's been in the same 2 gallon-ish pot for 2 1/2 yrs.
up until about 6 months ago it was a big healthy plant with lots of foiliage
it's just kind of become very scrawny.

i've considered repotting it- perhaps it's become a* bit root bound?

and prunning it back a bit, but i'm not very yfamiliar with peppers so i thought i'd run it by you all.

thanks for any help you can offer! -K