Suppermario, check out Purplemaxx. It can be added at start of flower and it will bring out alot of purples in a few weeks as well as enhance other natural colors.
Perhaps Leaf Miners. That's what it looks like to me. They are small pest that can be killed. Turn the leaf over and look at them with a magnifying glass and check for bugs.
I have a few clones under an active pollinating bell pepper plant and I'll be dammed if the newly formed leaves look EXTREMELY odd...they look very similar to the shape of the pepper plants.