Heat oil in a large skillet or wok over medium-high heat.
Add chicken strips and cook for 5–6 minutes until browned and cooked through. Remove and set aside.
In the same skillet, add garlic, ginger, and vegetables. Stir-fry for 3–4 minutes until tender-crisp.
Return the chicken to the pan. Add soy sauce, rice vinegar, honey, and stir to combine.
Add mango chunks and cook for another 2 minutes, just until warmed through.
If desired, stir in cornstarch slurry to slightly thicken the sauce.
Season with salt and pepper to taste.
Serve over rice or noodles, and garnish with fresh cilantro or green onions