Marinate the chicken in one tablespoon of sesame oil, the hoisin sauce, salt, pepper and a tablespoon of soy sauce for about 30 minutes.
Turn the instant pot to sauté mode and allow it to preheat for 2-3 minutes before adding the butter and sesame oil. When the butter has melted, add the diced onions, garlic and rice and sauté for another 3-4 minutes until lightly toasted.
Add the broth, frozen vegetables, soy sauce and salt/pepper then stir well.
Place the lid on the instant pot, turn the venting knob to "sealing."
Cook the rice on high pressure for 4 minutes. Allow the pressure to release for 10 minutes then quickly release the remaining pressure.
While the rice is cooking, scramble the eggs in a pan and set aside.
In a large skillet, cook the chicken over medium heat until done.
When the rice has finished cooking, add the chicken and eggs to the instant pot and stir to combine. Add more soy sauce and seasonings if needed.
Top the chicken fried rice with sliced green onions and sesame seeds and then serve.