Chile Pepper Fun Fact - Corking, Not Just in Wine 

Chile peppers can get stretch marks?

Corking on jalapeño peppers appears as scaring or minor striations on the surface of the pepper skin. When you see jalapeño skin cracking in this manner, it simply means that it needs to stretch to accommodate the rapid growth of the pepper.

Peppers with "corking" will be hotter and sweeter than those that are smooth. A: Jalapeno peppers are prone to this light brown cracking, called corking. It is the plant's way of closing and sealing the skin cracks that develop with normal maturing.

Corking happens when there is a lot of rain or any other source of water (soaker hoses), as well as plenty of sunshine, the pepper goes into a growth spurt, causing corking. Many different sorts of hot peppers are subject to this corking process, although not sweet pepper cultivars