Use the pressure cooking setting for 14 minutes. Once done, transfer chicken to a cutting board and cut into 1 inch cubes.
Add 1 tablespoon of cornstarch to the sauce and whisk until well combined. Turn heat to low saute and continue to stir until it thickens up, about 5-7 minutes. Add cubed chicken back in, 1 teaspoon of toasted sesame seeds and give it a stir until all chicken is coated evenly.