In a small bowl combine soy sauce, oyster sauce and water.
Place chicken in another bowl, sprinkle with garlic powder, black pepper and pour in 1 teaspoon vegetable oil and 2 teaspoons of the sauce mixture. Toss well to combine and set aside for 30 minutes.
Turn the instant pot to the sauté option and pour in sesame oil.
Add the chicken and cook for about 3 minutes stirring every now and then to cook all around.
Add diced onion and garlic and continue to cook for about 2 minutes.
Add water scraping the bottom to get every bit unstuck.
Cancel the saute option then add rice, chicken bouillon, and frozen vegetables mixing everything well and make sure rice is submerged with the liquids.
Close the cover, push the valve to the seal position and pressure cook on high for 3 minutes.
Meanwhile on a non stick skillet placed on medium heat, cook eggs in the remaining vegetable oil . Set the scrambled eggs aside.
When the cook time is done, Natural release the pressure for 3 minutes then do a manual release in short bursts. Carefully open the lid.
Pour the remaining sauce mixture evenly and stir to fluff.
Add in scrambled eggs, mix and adjust salt and pepper to your liking.
Serve garnished with sliced green onions.