Prepare the Marinade
In a large bowl, whisk together pineapple juice, soy sauce, ginger, garlic powder, brown sugars, ground cayenne, sesame oil, fish sauce, and rice vinegar until the sugar fully dissolves.
Add the chicken pieces and toss to coat well.
Cover and marinate in the refrigerator for at least 4 hours, or overnight for best results. A minimum of 15–30 minutes will still add flavor if you're short on time.
Cook the Chicken
Grilling Method:
Preheat the grill to 375–400°F and lightly oil the grates.
Remove chicken from the marinade, reserving ¼ cup of marinade for basting.
Grill the chicken for 6–8 minutes per side, until cooked through and internal temperature reaches 165–175°F.
During the last few minutes of cooking, baste with the reserved marinade for extra flavor and a glossy finish.
Pan-Searing Method:
Heat vegetable oil or toasted sesame oil in a large skillet over medium-high heat.
Cook chicken in batches to avoid overcrowding the pan.
Sear each piece for 6–8 minutes per side until golden brown and fully cooked.
Garnish and Serve
Serve hot over white rice or cilantro lime rice.
Top with fresh pineapple chunks, red onion, and green onions.
Sprinkle with sesame seeds for garnish.
Optional: Add a drizzle of Sriracha or chili jam for extra heat.
Grilled pineapple slices make an excellent side.