I've got seed of this chili a few years ago in Fatalii's surprise pack. Do you have any idea what it could be? See the hairy stems but non-hairy narrow leaves. Also notice the early branching but narrow growth pattern.

(http://www.t8m.info/unknown1.jpg)
(http://www.t8m.info/unknown2.jpg)

Once the flowers appear I'll post another pictures.