Place a wire rack in a rimmed baking sheet. Mix the chili-garlic sauce, honey, vinegar, ginger and 1 tablespoon salt. Using a sharp knife, cut parallel slashes about 1 inch apart all the way to the bone on both sides of each chicken leg. Rub the mixture onto the chicken and into the slashes, then place skin side up on the rack. Heat the oven to 450°F. Roast until well browned and reaches 175°F, 20 to 25 minutes. Transfer to a platter and sprinkle with sesame seeds.