How to Make It
Preheat broiler to high with oven rack in middle of oven. Rub olive oil into 6 cups packed torn lacinato kale leaves in a large bowl for 30 seconds. Add thinly sliced unseeded red Fresno chile; toss to coat. Place on a baking sheet lined with aluminum foil; broil until crispy, 3 to 4 minutes, stirring after 2 minutes. Drizzle with red wine vinegar, and sprinkle with kosher salt.