Shagrathanswered grow question 5 years ago Have you spilled something to those leaves? They don't look anything usual so I'm thinking that those particular leaves had some kind of accident and its nothing to worry about. If the leaves gets damaged they wont heal themselves anymore, the symptom just stops spreading.
My two pennies are: Don't worry about it but keep an close eye on those and IF it starts to spread you might have some kind of a problem.
Happy growing!! 👌