Sumac and Fennel Fattoush

Name: Sumac and Fennel Fattoush
Cuisine: Mediterranean
Ingredients: Fattoush; 2 pitas, roughly chopped; 3 tablespoons extra-virgin olive oil; 1 teaspoon kosher salt; 3 cups baby kale; 1 bulb of fennel, shaved on a mandoline; ½ red onion, shaved on a mandoline; ¼ cup fresh basil leaves; ¼ cup fresh mint leaves; ¼ cup fresh parsley leaves; Vinaigrette; 2 teaspoons red wine vinegar; 1 teaspoon lemon juice; 1 teaspoon sumac, plus more for garnishing; ½ teaspoon honey; Kosher salt and freshly ground black pepper