Prep the chicken by dicing it into small, even pieces. Toss with soy sauce and cornstarch and let sit for about 10 minutes.

Heat a large pan or wok until hot, add oil, and swirl to coat evenly.

Add chicken in a single layer, cook undisturbed for 1-2 minutes, then stir until lightly browned and cooked through. Remove and set aside.

In the same pan, add more oil if needed, cook garlic and ginger briefly until fragrant, then add vegetables and stir fry over medium-high heat.

Return chicken to the pan, add oyster sauce, honey, and more soy sauce if needed, stir until sauce coats everything evenly, and cook for another minute.

Adjust seasoning with black pepper or soy sauce, turn off heat, top with green onions, and serve immediately.