Coat chicken in 2 tbsp cornstarch for a light crispy finish.
Heat oil in a large non-stick skillet over medium-high heat. Add the chicken and cook until browned and nearly cooked through (5โ7 minutes). Remove and set aside.
In the same skillet, add minced garlic and sautรฉ for 30 seconds.
Pour in the bourbon to deglaze, simmer for 2 minutes to burn off alcohol.
Add soy sauce, brown sugar, ketchup, vinegar, garlic powder, ginger, and chili flakes. Stir well and simmer for 3โ4 minutes.
Add the chicken back to the skillet and coat it in the sauce.
Stir in the cornstarch slurry to thicken the sauce. Let it bubble for 2โ3 more minutes.
Garnish with sesame seeds and chopped spring onions. Serve hot!