In a bowl, toss the chicken pieces with cornstarch, salt, and pepper until evenly coated. This will help create a crispy texture.
In a large skillet, heat olive oil over medium-high heat. Once hot, add the coated chicken pieces and cook until golden brown and cooked through, about 5-7 minutes. Remove chicken from skillet and set aside.
In the same skillet, reduce the heat to medium and add minced garlic. Sauté for about 30 seconds, until fragrant.
In a small bowl, whisk together honey, soy sauce, chili paste, rice vinegar, sesame oil, and crushed red pepper flakes, if using.
Pour the honey garlic sauce into the skillet and bring it to a simmer. Allow it to thicken slightly for about 2-3 minutes.
Return the cooked chicken to the skillet and toss everything together until the chicken is well coated in the sauce.
Cook for an additional minute, then remove from heat.
Notes
Serve hot, garnished with green onions and sesame seeds.