Start by seasoning the chicken breasts with salt, freshly ground black pepper, garlic powder, and ground ginger. Make sure to coat them evenly for maximum flavor.
Set your Instant Pot to the “Sauté” mode and add the toasted sesame oil. Once hot, add the seasoned chicken breasts. Sauté for about 2-3 minutes on each side until they are lightly browned.
Pour in 1 cup of teriyaki sauce and the chicken broth. Stir to combine, ensuring the chicken is well coated in the sauce.
Layer the uncooked Jasmine rice on top of the chicken, followed by the chopped bell peppers and broccoli. Pour the remaining 1 cup of teriyaki sauce over the top, but do not stir.
Seal the Instant Pot lid and ensure the valve is in the 'Sealing' position. Set the Instant Pot to pressure cook on high for 10 minutes. Allow for a natural release for 10 minutes before switching the valve to 'Venting'.
Open the lid and carefully fluff the rice with a fork or rice paddle. Serve the chicken and vegetables in bowls, garnished with sesame seeds and chopped green onions.