Combine pineapple juice, honey, soy sauce, brown sugar, olive oil, minced garlic, grated ginger, lime juice, cornstarch, rice vinegar, and chili flakes in a small saucepan over medium heat. Whisk constantly for 3-4 minutes until the mixture thickens slightly and the cornstarch dissolves completely. This step matters because you're activating the starch so your glaze actually adheres to the chicken instead of sliding off.

Pat your chicken breasts completely dry with paper towels—wet chicken won't develop grill marks, and those marks are what make this look restaurant-ready. Brush both sides lightly with a neutral oil to prevent sticking on the grates. I know this adds a step, but it's the difference between a mediocre sear and a gorgeous golden exterior.

Preheat your grill to medium-high heat (about 400°F). Oil the grates with a folded paper towel and tongs so they're truly slick. Place chicken breasts on the grill and resist the urge to move them for the first 5-6 minutes—stillness is how grill marks form.

At the 12-minute mark, brush a thin, even coat of glaze across the top of each chicken breast using a pastry brush. Flip the chicken carefully and brush the other side. The glaze needs these three separate applications to build flavor without burning because heat intensifies sugar.

Cook for another 8-10 minutes until the internal temperature reaches 165°F at the thickest part. At the 25-minute mark (total cooking time), brush a second thin coat of glaze on both sides. This is your vulnerability moment—the glaze looks like it's going to burn, but it won't if you trust the process and keep the heat steady.

In the final 90 seconds, brush the third and final glaze coat onto both sides of each breast. This final layer gives you that glossy, restaurant-quality finish that makes people ask what's different about your Hawaiian grilled chicken crowd recipe. Remove from heat and let rest for 5 minutes before serving—this keeps the chicken moist inside.