Step 1: Preheat a skillet over medium heat.
Step 2: Add oil and warm the skillet until it's hot.
Step 3: Place the duck in the skillet and cook for about 15 minutes, turning occasionally.
Step 4: Remove the duck from the skillet and let it rest for 5 minutes.
Step 5: Season with soy sauce, sesame oil, chili paste, salt, and pepper.
Step 6: Return the duck to the skillet and cook for an additional 5 minutes until it's golden and crispy.
Step 7: Serve warm and enjoy!