What is this on my leaves?

Just started and only on one branch. Plant looks pretty healthy to me. Outdoor grow and in her stretch. I just noticed this so it basically happened overnight and I always check on my plants. I feed fox farm trio according to their schedule and Feed Cal/Mag. I haven’t checked the pH so I’m assuming this might be a pH problem but I don’t know this is my first grow. I don’t see this on any other plants or any other part of the plant that it is on. Only one spot. I’m on the coast of California. It’s always gusty and the temp averages 70-75. Any ideas? How do I fix this?

a couple bad spots does not a problem make.

Ok. I just want to make sure I’m not having any deficiencies or any issues before flower. Rather deal with a small issue then a large issues

You taking about that one yellow leaf? It’s probably just due to being shaded under canopy. Would not worry too much. It is not a ph/absorption problem or the whole plant would be affected. Don’t sweat it

Lol. Ok thanks guys. I guess I’ll quit sweating it.