sirmoebly

I think it's due from being grown indoors. Subject to a climate (indoors) a plant grows with no wind & no real light is weak. Mine does the same thing, no worries thou once hardend off to the outside it will be fine. It doesn't matter how long you try to harden off your plant it will still do the same thing. Only new growth outside will be stong(usually it takes two or three leaves before you see some strenght in your plant).
Good luck to ya Bryan!!!