01 - Combine ground chicken, chopped onion, garlic, soy sauce, grated ginger, salt, and pepper in a large bowl. Mix until ingredients are evenly distributed throughout the meat.
02 - Divide the chicken mixture into 4 equal portions and shape each into a patty approximately 1/2 inch thick, ensuring uniform size for even cooking.
03 - Heat a grill or grill pan over medium heat and lightly brush with olive oil to prevent sticking.
04 - Place patties on the grill and cook for 5–6 minutes per side until fully cooked with clear running juices, reaching an internal temperature of 165°F. Add cheese slices during the final minute if desired, covering to melt.
05 - Grill pineapple rings for 2 minutes per side until light char marks appear and natural sugars caramelize slightly.
06 - Place burger buns cut-side down on the grill for 1–2 minutes until golden brown and lightly crisped.
07 - Spread barbecue sauce on the bottom half of each toasted bun. Layer with lettuce, tomato slices, cooked chicken patty, grilled pineapple ring, and red onion. Top with the remaining bun half and serve immediately.