I made some recently by dipping leaves in olive oil then putting into the oven (on a silpat) with a sprinkle of sea salt. They turned out "okay" but oily. Next time (here is the suggestion....) I would spray with Pam to reduce the excess oil that comes with dipping into a saucer of oil.
After all is said and done, they are a nice pre-dinner snack.

This is a tried and true recipe for kale chips - never fails. http://www.epicurious.com/recipes/food/views/Tuscan-Kale-Chips-351240

Did you search this site? If not, here are some: http://food52.com/recipe/kale%20chips