What's wrong with my leaf

My plants been vegging good for 3 or 4 weeks now and only one of the leaves has this discolor on it. check it out please I use fox farm nutes twice a week and the rest of the plant looks beautiful. You can see my journal and all that for more info on my plants.

its nothing man your plant looks healthy!! You might of droped a little water and nutes on it while watering. no concern really!