01 - In a medium mixing bowl, whisk together the honey, soy sauce, BBQ sauce, minced garlic, olive oil, apple cider vinegar, black pepper, smoked paprika, and chili flakes until fully combined.
02 - Measure out ¼ cup of the marinade and set it aside for basting during grilling or for serving alongside the finished skewers.
03 - Add the cubed chicken to the remaining marinade and toss until every piece is evenly coated. Cover the bowl with plastic wrap and refrigerate for at least 1 hour, or up to overnight for deeper flavor penetration.
04 - If using wooden skewers, submerge them in water for at least 30 minutes prior to grilling to prevent them from catching fire on the grill.
05 - Thread the marinated chicken pieces onto skewers, alternating with chunks of red bell pepper, yellow bell pepper, and red onion wedges for even cooking and visual appeal.
06 - Preheat your grill or grill pan to medium-high heat, approximately 400°F. Lightly brush the grill grates with oil to prevent sticking.
07 - Place the skewers on the hot grill and cook for 12 to 15 minutes, rotating every few minutes and basting with the reserved marinade, until the chicken is cooked through to an internal temperature of 165°F and has a light char on the edges.
08 - Remove the skewers from the grill and serve hot, optionally garnished with fresh chopped parsley or a sprinkle of sesame seeds.