Prep the chicken: Pat the chicken dry. Toss with cornstarch and 1 tablespoon soy sauce until lightly coated. This helps brown the outside and lock in moisture.
Mix the sauce: In a small bowl, whisk sweet chili sauce, honey, sriracha (if using), rice vinegar, sesame oil, and 2 tablespoons water.
Taste and adjust for sweetness, heat, and tang.
Heat the pan: Add oil to a large skillet over medium-high heat. When it shimmers, add the chicken in a single layer. Don’t crowd the pan.
Sear the chicken: Cook 3–4 minutes without moving, then flip and cook another 3–4 minutes until browned and cooked through.
Work in batches if needed.
Add aromatics: Push chicken to the sides. Add garlic and ginger to the center and cook 30 seconds, just until fragrant.
Glaze it: Pour in the sauce. Toss to coat and let it bubble for 2–3 minutes, stirring, until thick, glossy, and clinging to the chicken.
If it gets too thick, splash in a bit of water.
Finish and serve: Taste and season with a little more soy sauce if needed. Sprinkle with sesame seeds and green onions. Serve hot over rice or noodles with vegetables.