What is wrong with the leaves?

You seem to have a PH problem ..you should be between 5.8-6.2 ....Are the leaves shiny? And kinds looks like claws? Check you PH ...if that's not it , it could be a nitrogen deficiency. We had this issue at the beginning of veg our PH was 8.2 we brought it down to 5.8 and it went away pretty much over night...... EITHER way should be an easy fix hope this helps

That leaf was low on the plant. On further inspection, all leaf tips are brown. I'm assuming I had to have nuked it with nutrients.😭

Heat stress would be my first guess if its not that then where the burns are would make me lean towards an overfeed. Though this could be down to your pest eating it who know where abouts on the plant did this leaf come from ?