First, combine all sauce ingredients. Add soy sauce, bourbon whiskey, unsweetened apple juice, rice vinegar, maple syrup, minced garlic, grated ginger, and paprika in a bowl, mix well. Set aside.
Rinse and pat the chicken thighs dry with paper towels. Cut the chicken thighs into 1/2-inch (1.3cm) thick strips.
Add one tablespoon of corn starch to a shallow plate. Coat the chicken strips with the corn starch lightly.
Heat the skillet (or frying pan) over medium-high heat with oil and add the chicken strips. Cook the chicken strips on both sides for 6 to 8 minutes until golden brown and almost cooked through. Add the bourbon sauce mixture to the skillet and constantly stir to coat the meat evenly with sauce.
Mix one teaspoon of corn starch and two tablespoons of water in a small bowl, and whisk well. Lower the heat to medium, and stir in the corn starch and water mixture. Bring to a simmer, keep stirring and cook for 5 minutes until the sauce thickens. Turn off the heat.
Dish out, and serve it immediately with the chopped scallions sprinkled on top.