Boss, redeem yourself. This is my go to strain for quickness. Seed to puff in 67 days. Try it again if you have the will. This strain is super easy, you got a bad bean.
Seems like it may have been a bad genetic seed? I got two growing, one in HF soil in 3 gal pot and one in 2 gal pot in coco. I'm using a 2x2x4 with one 300w viparspectra (135 actual watts). And both are about 16-18" tall just started flowering about 10 days ago. It looks like even with your 300w light and good set-up, that seed failed you hard man. Who knows maybe if you would of pop 1 more and had 2 going you would of had a "normal" looking/yielding plant and been able to tell that it was a bad seed to begin with. Also what 1nn0cent said, you harvested too early as well, you harvested at week 7? That's way too early man. You could of easily waited 2 more weeks and probably would of doubled your yield. You'll have better luck next time if you got more bloody skunk seeds, just be patient and let her grow.