I cook them in the oven all the time, and Lacinto Kale appears to be the best type of kale to roast. I've conducted experiments Then again, dino kale is always my "go to" for kale anyway.

I've considered eventually buying a dehydrator for kale and other veggies. The kale chips you got from Trader Joe's weren't roasted but dehydrated chips. I just tried them last week and never did decide if I liked the seasoning they used. My bag was also half full of dust...