In a large mixing bowl, combine chicken, salt, pepper, soy sauce, vinegar, sugar, and cornstarch; toss to combine. Reserve.
1 pound boneless skinless chicken breasts, Salt and pepper, 1 teaspoon low-sodium soy sauce, 1 teaspoon rice wine, ½ teaspoon granulated sugar, ½ teaspoon corn starch
In a separate mixing bowl, whisk together the soy sauce, vinegar, chicken broth, sugar, and cornstarch. Reserve.
1 tablespoon low-sodium soy sauce, 1 tablespoon white vinegar, ½ cup low-sodium chicken broth, 1 tablespoon granulated sugar, 2 teaspoons cornstarch
Heat 1 tablespoon vegetable oil in a wok over medium-high heat.
3 tablespoons vegetable oil
Add the chicken to the hot oil in one single layer; cook on all sides until done, about 4 to 5 minutes. Remove the chicken from the pan and return the pan to the burner.
Add the remaining vegetable oil to the pan and heat over high heat.
Stir in peppers and snap peas; cook for 2 to 3 minutes or until just tender. Stir in the minced garlic and ginger; cook for 20 seconds.
1 red bell pepper, 2 cups sugar snap peas, 3 cloves garlic, 2 tablespoons minced fresh ginger
Add the chicken back into the pan and toss to combine.
Stir previously prepared sauce and then pour it over the chicken; toss to coat all the ingredients. Cook and toss for another minute or two or until the sauce thickens. Remove from heat.
Drizzle with sesame oil, garnish with green onions and red pepper flakes if you like, and serve.
1 tablespoon sesame oil, Green onions