In a medium bowl, combine the ketchup, brown sugar, soy sauce, pineapple juice, ginger, sesame oil and rice vinegar. Season to taste with salt and pepper.
In a large bowl mix the chicken and ½ marinade and marinate for at least 1 hour or up to 4 hours. Refrigerate the remaining marinade.
Thread the chicken, pineapple, peppers and onion alternately onto bamboo skewers. Drizzle with olive oil and season with salt, pepper and CanCooker All Purpose Seasoning.
Place the conversion grill on your portable grill and heat grill on medium heat. Place 4 skewers on the grill and brush with marinade. Grill 5 minutes on each side, brushing marinade after each turn. Serve immediately