i have found chinense varieties as they overwinter never get back the first year big leaves(those that are in containers), their leaves remain small and production is limited as well.
i have a tepin that is several years old and very strong, i decorate it like a christmas tree at xmas. it sits in my living room in winter and only for a brief period when the sun is at its lowest in the sky gets direct sunlight for maybe 2 hours.
yellow bonnets are real survivors as is goatsweed. fatalii is hearty, my longest 5 years of overwintering. i have had a serrano last 4 years. and my tabasco are entering their 3rd year as are my pequins. i have a red bonnet that i am guessing is entering its 4th year, i don't know why i keep it alive, its leaves are small as is the plant(from cutting it back).
i can't keep bhuts longer than 2 years, same for scorpions,7 pots, chocolate habs. 3 years for some orange habs. i have never had good luck with rocoto/manzano lasting more than 2 years.
like the others say, crop them back to regulate size.
if you would like a tepin plant to play with overwinter i have a spare you can have. it is a wild texas tepin and not a mexican tepin but i am guessing they are the same species, this will be its 2nd year. i will be potting up tomorrow into 2 gallon containers.