In a small bowl, whisk together ¼ cup reduced sodium soy sauce, ½ cup water, ¼ cup honey, 1 Tablespoon cornstarch, and 1 teaspoon minced garlic.If using, stir in 1-2 teaspoons rice vinegar and ½ teaspoon ground ginger. Set aside. Heat a large skillet over medium-high heat. Add olive oil to lightly coat the pan.
Add chicken and cook, stirring occasionally, until browned and cooked through, about 5–6 minutes.
Add frozen vegetables and cook, stirring occassionally, until heated through and any excess moisture has cooked off.
Increase heat to high. Stir the sauce again, then pour into the pan.
Cook, stirring occassionally, until the sauce begins to boil.
Reduce the heat to low and simmer for 1–2 minutes, until the sauce thickens and coats the chicken and vegetables. When you drag your spoon through the sauce, you'll know it's done when it leaves a streak in the pan.
Remove from heat and serve warm.