First, prepare the homemade teriyaki sauce.
Next, prepare chicken by thinly slicing into bite-sized strips.
Then, chop broccoli and red pepper and slice carrots. Set aside.
Next, heat 1.5 tablespoons of olive oil over medium/high heat in a large skillet. When the olive oil is fragrant, add diced chicken.
Saute chicken for 4-5 minutes to partially cook. Then, add in the chopped veggies.
Saute for a few minutes and then add teriyaki sauce.
Continue cooking over medium/high heat for another 5 minutes or until chicken is fully cooked and the veggies are at the desired doneness.
Option to serve as is OR to thicken sauce.
To thicken sauce, sprinkle in around 1/2 tablespoon of cornstarch. Make sure that the burner is still on medium/high as the heat is what will activate the cornstarch. Whisk for a few minutes or until the sauce begins to thicken.
Then, make sure to toss all of the stir fry in the sauce.
Serve teriyaki stir fry over your favorite grain.