Cut the chicken breast into bite-sized pieces.
In a bowl, whisk together soy sauce, honey, sesame oil, garlic, and ginger.
Add the chicken pieces to the bowl and marinate for at least 10 minutes.
Turn on the Instant Pot and select the sauté function.
Add the marinated chicken to the pot, stirring occasionally until browned.
In a separate bowl, mix cornstarch with water until smooth.
Pour the cornstarch mixture into the pot, stirring well.
Close the Instant Pot lid and set it to manual high pressure for 10 minutes.
Once cooking is complete, allow for a natural release for about 10 minutes before venting.
Open the lid, sprinkle sesame seeds and chopped green onions over the chicken before serving.