Preheat the oven to 450°F. Line two large rimmed baking sheets with foil and coat with nonstick cooking spray. In a large bowl, toss the wings with the canola oil and season with salt and pepper. Transfer the wings, skin side up, to the prepared baking sheets and roast them for about 45 minutes, until they are cooked through and crisp.
Meanwhile, in another large bowl, whisk all of the remaining ingredients except the garnishes with a pinch of freshly ground pepper.
Add the crispy wings to the chile sauce, toss to coat, and garnish with the sesame seeds and scallions. Serve hot.