Dead brown curling leafs on one side of outdoor plant

I have an outdoor clone about two weeks into flowering and i just noticed some of the leafs on only ONE side turned brown and kinda curled up... and some of the buds are being affected by this. I just switched from Miracle Grow All purpose fertilizer every 2 weeks to some Plant Prod flowering fertilizer 10-20-10 every week and a half. I feed with Molasses mid week. Heres a pic.

Anybody know what I can do to help get rid of this or stop it from spreading?

BUUUUMMMPPPP

And Ive had yellowing from the bottom up on a couple of my plants. what do I do?