Add an additional tablespoon of oil to pt. Once shimmering, add garlic and ginger. Cook for about 30 seconds.
Add red pepper, carrots, and boy choy. Saute until vegetables are softened, about 3 minutes.
Stir in chicken, with its juices, remainder of wasabi teriyaki sauce, and rice.
If cooking in Instant Pot, stir in 1 cup of water. If cooking on stove top, stir in two cups of water. Make sure that all ingredients are well combined.
If cooking in Instant Pot, cover, turn manual mode with high pressure for 5 minutes. Once cooking has finished, let natural release for 10 minutes.
If cooking on stove top, bring liquid to a boil. Once boiling, turn heat to low and cover pot. Simmer liquid is absorbed by rice, about 10-12 minutes.