Preheat oven to 350 degrees F. Make glaze: In a medium bowl, whisk together soy sauce, honey, garlic, lime juice, Sriracha, 1 tablespoon sesame oil, and cornstarch.
Season chicken with salt and pepper. In an ovenproof skillet over medium-high heat, heat oil. Sear chicken and let cook until golden, 4 minutes, then flip and let cook 4 minutes more. Pour over glaze and transfer to oven.
Bake until chicken is cooked through, 25 minutes. Heat broiler.
Spoon glaze over chicken and broil 2 minutes. Garnish with scallions and sesame seeds.