Pepper plants and wet leaves

It's news to me, although if the leaves are wet because the plants are outside the cold will probably kill them.

In general it's not a good idea to wet leaves when watering, especially under glass as this can lead to leaf scorch, and also increase the risk of blight on tomatoes.

They are very vulnerable to scorching, but it shouldn't kill them unless they are tiny.  Mine get wet leaves every year as my greenhouse leaks & they haven't died yet!