First of all, separate the canned slices of pineapples from the juice and reserve both for later use.
Secondly, add BBQ sauce, soy sauce, reserved pineapple juice, ketchup, sesame oil, onions, powdered or chopped garlic, powdered or chopped ginger in a small mixing bowl, and combine them well. Also, reserve ½ cup of the prepared marinade for later use.
Then marinate the chicken with the remaining marinade batter, cover it with cling wrap or aluminum foil, and refrigerate for about 2 to 8 hours.
When it's time to BBQ the chicken, take a water-filled pan and boil the long-grain white rice in it.
Now, for grilling the chicken, light up your smoker with the woodchips of your choice.
Grill chicken over the smoker while brushing it using a food brush with reserved marinade and melted butter, especially in the last few minutes, and cook until the internal temperature of the chicken reaches 165 degrees F.
In a pan, roast some black cumin in vegetable oil and then grease both sides of pineapple slices with vegetable oil. In the last few minutes, grill each side of pineapple slices for at least 2 minutes or until they have slightly softened and formed a grilled texture.
Finally, top the boiled white rice with deliciously grilled chicken and pineapple slices for serving your meal. Sprinkle some thinly sliced green onions, and here you go. Enjoy!