Soak 12 wooden skewers in water for at least 30 minutes to prevent them from burning on the grill.
In a large mixing bowl, combine 1 cup of barbecue sauce and 1 tablespoon of olive oil. Add the 1.5 lbs of cubed poultry and toss until well coated. Cover and refrigerate for at least 30 minutes.
Preheat your grill to medium-high heat, aiming for roughly 375°F to 400°F.
Thread the marinated meat, 2 cups of fresh pineapple chunks, red bell pepper pieces, and red onion pieces alternately onto the soaked skewers. Leave a tiny bit of space between ingredients for proper heat circulation.
Place the kabobs on the hot grill. Cook for 10 to 12 minutes, turning occasionally, until the meat is fully cooked (internal temperature of 165°F) and lightly charred.
Remove the kabobs from the grill, sprinkle with 1/4 cup of chopped fresh parsley, and serve immediately.