This one is growing in the gh and lately started to send out somewhat defformed leaves, is this a nutrient defficiency or something else ? I think i havent overfed it, i usually spray with leaf fertilizers, the soil seemed a bit too moist lately so i am carefull and do not give it too much water...
The variety is most likely super dwarf cavendish.
The yellow leaves that are seen in the pics were the first leaves that the plant made after winter ,so they have nothing to do with its present condition.