Plant leaves like that often indicate some nutrient deficiency, when that cannot be traced to an insect pest.

I have seen leaves like that on my plants when they have been attacked by aphids in the very early bud stage. The buds become deformed and then open up to a deformed leaf. There are typically no aphids visible by the time I see the damage. You can remove the leaves if they are unsightly, and aphids can be managed with a strong spray of water. They certainly won't kill the plant. Just make the leaves look deformed.

The problem especially if on younger or new leaves is likely to be Boron deficiency. Try one gram of borax(Hindi Suhaga) per pot dissolved in a cup of water. Effect can be expected to show on newest leaves about 3weeks after treatment.
Do not give any more borax for two months, and do not give in excess.