Deformed leaves

Quite simply is prob your PH.... What is it sitting @ ? (& run off ?)
Look healthy enough though for now...
As long as your not over/under watering , ph is good and light is far enough away, it should resolve itself soon enough.

 

6.5 is good..... I assume your growing in soil?
test the run off too.....

 

Heat stress? That causes clawing , deformed leaves... I had it.
Raised the light and within a week, they settle down and straightened out....

 

There is nothing wrong with those plants except maybe a little touch of light based dehydration - not even burnt.

 

I have some similar looking leaves, mostly lower or smaller leaves, is there an actual reason why? Too many nutes ? Too much lights ? Stress?
I personally think it's the nutes

 

looks ok. not sure why the leaves look clipped. Do you have any bugs? Sometimes little leaves get damaged quite easily. As long as they grow through it its fine. They will look a little thin at the beginning of the stretch. Have you started flowering or are they autos? To much nutes will start by the leaf tips yellowing and browning. Then u usually see weird cuurling of the new growth and it does not grow out straight. They stay kind of weird. In general I dont see any probs. Take it slow. Its too easy to overreact when you look at them everyday

 

They are clones, 1 1/2 weeks old, and they have been in the newly transplanted soil for 3 weeks now 18/6 schedule