Cut the chicken breasts into bite-sized pieces and season with salt and pepper.
In a large skillet, heat the vegetable oil over medium-high heat. Add the chicken pieces and cook until browned and cooked through, about 5-7 minutes. Remove the chicken from the skillet and set aside.
In the same skillet, add the garlic and ginger, sautéing for about 30 seconds until fragrant.
Add the sliced red bell pepper and snap peas to the skillet, cooking for 3-4 minutes until they start to soften.
Return the cooked chicken to the skillet. Stir in the diced mango, soy sauce, hoisin sauce, and honey. Cook for an additional 2-3 minutes until everything is heated through and the sauce is well combined.
Remove from heat and stir in the chopped green onions. Serve over cooked jasmine rice or quinoa.