In a large pan, heat the oil over high heat. Add in the prepared chicken. Cook the meat about two minutes, stirring regularly so that it browns on all sides. Next stir in the soy sauce, brown sugar, honey, ginger, and garlic until they're evenly incorporated. Bring the teriyaki sauce to a boil, then immediately turn down the heat and let the sauce simmer, stirring occasionally, until it's dark and nicely thickened and the chicken is cooked through. I'd say about 8 to 12 minutes of cook time. Remove the pan from the heat, and set aside.