01 - Combine ground chicken, chopped onion, garlic, soy sauce, grated ginger, salt, and pepper in a large bowl. Mix thoroughly until all ingredients are evenly distributed throughout the meat.
02 - Divide the chicken mixture into 4 equal portions. Shape each portion into a uniform patty, ensuring even thickness for consistent cooking.
03 - Preheat grill or grill pan over medium heat. Lightly brush the cooking surface with olive oil to prevent sticking.
04 - Place patties on the grill and cook for 5-6 minutes per side. Cook until fully cooked through with clear juices and internal temperature reaches 165°F. If adding cheese, place a slice on each patty during the final minute of cooking and cover to melt.
05 - Grill pineapple rings for 2 minutes per side until lightly caramelized with distinct grill marks.
06 - Place burger buns cut-side down on the grill for 1-2 minutes until golden brown and lightly crisp.
07 - Spread barbecue sauce on the bottom half of each toasted bun. Layer lettuce, tomato slices, cooked chicken patty, grilled pineapple ring, and red onion. Top with the remaining bun half and serve immediately.