01 - In a medium bowl, toss chicken pieces with salt, pepper, and cornstarch until evenly coated.
02 - In a small bowl, whisk together honey, soy sauce, garlic, rice vinegar, ginger, and red pepper flakes. Set aside.
03 - Heat 1 tablespoon of oil in a large skillet or wok over medium-high heat. Add the chicken in a single layer and cook for 5–7 minutes, turning occasionally, until golden and cooked through. Remove chicken and set aside.
04 - Add the remaining oil to the pan. Sauté onion and bell pepper for 2–3 minutes until slightly softened. Add pineapple chunks and cook for another 2 minutes.
05 - Return the chicken to the pan. Pour the sauce over the mixture and stir to coat everything. Simmer for 3–5 minutes, until the sauce thickens and the chicken is well glazed.
06 - Remove from heat. Garnish with green onions and sesame seeds if desired. Serve hot over steamed rice or noodles.