Grilled Chicken Thighs with Pineapple, Corn, and Bell Pepper Relish

INGREDIENTS

• Cooking spray
• 1 teaspoon garlic powder
• 1 teaspoon ground cumin
• 3/4 teaspoon salt, divided
• 1/4 teaspoon freshly ground black pepper
• 8 skinless, boneless chicken thighs (about 1 1/4 pounds)
• 2 cups cubed fresh pineapple (about 1/2 pineapple)
• 1/2 cup fresh corn kernels (about 1 ear)
• 1/3 cup finely chopped red bell pepper
• 1/4 cup thinly sliced fresh basil
• 3 tablespoons finely chopped red onion
• 1 tablespoon cider vinegar
• 1 teaspoon sugar