looks like a bug problem to me. Look under the leaf and see if you can locate any little “eggs”. Ive only been doing this a couple years so my nomenclature is rusty but thats what I think. Look in your dirt for pest also. Sticky traps will save your life. My white widow had a problem similar to this but it ended up being light bleaching. Not your case I do believe, someone will chime in soon, this forum is still developing and Mr.Grow it is a mad scientist so he will have the answer for sure!
@Jason Haywood thanks I looked under leaves and do not see anything. It's only that strain and only the 3 big fan leaves have it. But I will get some sticky paper for bugs since this is my first outdoor grow.