Weird looking leaves

My guess is your soil has enough nutrients in it but it can't absorb them because the PH is out of range Determining what it is can be difficult without a journal. Key information we would need is what your currently growing in, size of pot, what your feeding and how often. A picture of the full plant so we can see where this is happning. From your pictures it could be a lack of magnesium. Strange you have no brown spots( lack of calcium) as they usually go hand in hand. https://sensiseeds.com/en/blog/magnesium-deficiency-cannabis-plants-spot/ But it could also be a lack of : Sulfur – Showing at top of plant, purple streaks can appear on stems. Zink – shows at top, burnt tips, new growth is stunted and nodes are close together Iron – Same interveinal chlorosis, But usually starts at the base of the leaf and the middle to tip will still be green throughout in the early stage.

"... it’s a bunch on the same plant" A picture of the plant or tell us which of your diaries to look at would be a help. The location of the odd leaves can be a clue to whether or not it's light or a nutrient deficiency. For example, light issues tend to first appear on the top/upper parts of the plant. Mobile nutrient problems often show up first on lower branches & leaves.

Too much light!!!!!!!!!!!!!! Too close. Chlorophyll washed

It’s the only plant doing it in the tent but it’s not just one leaf it’s a bunch on the same plant

@GarciasGarden Iron deficiency by the looks mate

that is a weird leaf, I'm interested in what the people have to say it is. If i had to guess, something to do with lights. but that's a wild guess.

Is it the only leaf doing it or you mean it’s the only plant in the tent doing it?