1. Cut the chicken into bite-sized pieces suitable for skewering.
2. In a bowl, combine soy sauce, brown sugar, minced garlic, and minced ginger to create the yakitori sauce.
3. Thread the chicken pieces evenly onto the soaked wooden skewers.
4. Preheat your grill or grill pan to medium-high heat.
5. Place the skewers on the grill and cook for about 3-4 minutes per side.
6. Brush the skewers generously with the yakitori sauce while grilling.
7. Continue grilling and basting, turning frequently, until the chicken is fully cooked and caramelized.
8. Remove from heat and let the skewers rest for a few minutes before serving.