What might cause weird shaped stunted leaves?

Genetics, you have nothing to worry about. Sometimes it happens. Check out my strawberry lie auto from fastbuds, they are mutated, but im sure they will still turn out

Oh and if you do transplant it, I'd recommend you kinda rinse/wash the roots in water (if you wanna be sure), coz you might have like little pockets of nutrient excess/deficiencies, buildups and whatnot.

And yeah, occasionally genetics. If you wanna be sure, just transplant it to some different "clean" soil.

The germination itself (popping out the seed can cause weirdness), light, heat, watering and nutrients.

It's just a mutated genetics mate. Nothing you've done would have caused this 🌱👍

It's probably nothing but if it doesn't improve after a bit try moving it out of direct light for a little while. Sometimes runty plants will have underdeveloped roots and the shading helps take it's focus off photosynthesis and it works on the roots more.

Es muy posible que estés en lo cierto y sea la genética, también puede ser que necesite mas humedad que el resto porque a mi me pasa lo mismo en la kerosene krash