Heat the vegetable oil in a large skillet or wok over medium-high heat.
Add the sliced chicken to the skillet and season with salt and pepper. Stir-fry for about 5-7 minutes, or until the chicken is cooked through and lightly browned.
Add the minced garlic and ginger to the skillet, stirring quickly for about 30 seconds until fragrant.
Toss in the sliced bell pepper, broccoli florets, and snap peas. Stir-fry for an additional 3-4 minutes until the vegetables are tender-crisp.
In a small bowl, mix the soy sauce, oyster sauce, cornstarch, and chicken broth until well combined. Pour this sauce over the chicken and vegetables in the skillet.
Stir well to coat everything in the sauce and cook for another 2-3 minutes until the sauce thickens.
Drizzle with sesame oil before serving. Serve hot over cooked rice or noodles.
Notes
For added heat, include sliced chili peppers or a dash of red pepper flakes when stir-frying.
Substitute the chicken with tofu or shrimp for a different protein option.