Prep the chicken: Pat the chicken dry with paper towels. Toss with 2 tablespoons cornstarch, salt, and pepper until evenly coated.
This helps the bites brown and the sauce cling.
Make the sauce: In a small bowl, whisk honey, soy sauce, rice vinegar, sesame oil (if using), and red pepper flakes. In a separate cup, stir together 2 tablespoons water and 1 teaspoon cornstarch to make a slurry. Set both aside.
Sear the chicken: Heat oil in a large skillet over medium-high.
Add chicken in a single layer. Cook 3–4 minutes without moving, then flip and cook another 3–4 minutes until golden and nearly cooked through. Work in batches if needed so you don’t crowd the pan.
Add the garlic: Reduce heat to medium.
Push chicken to the sides and add minced garlic to the center. Stir for 20–30 seconds until fragrant—don’t let it brown too much.
Sauce it up: Pour the honey-soy mixture into the pan, tossing the chicken to coat. Bring to a gentle simmer.
Thicken: Stir the cornstarch slurry, then pour it into the skillet.
Simmer 1–2 minutes, stirring, until the sauce turns glossy and thick and the chicken is fully cooked. If it gets too thick, splash in a tablespoon of water.
Taste and finish: Adjust seasoning—add a pinch of salt for savoriness, more vinegar for tang, or extra honey if you want it sweeter. Sprinkle with sesame seeds and green onions.
Serve: Spoon over warm rice or noodles with a side of steamed broccoli, snap peas, or a simple cucumber salad.