Melt butter in a saucepan over medium-high heat. Add garlic; sauté 1 minute. Add rice; cook 30 seconds, stirring constantly. Add 1 1/2 cups water and 3/8 teaspoon salt; bring to a boil. Cover, reduce heat, and simmer 12 minutes or until rice is tender and liquid is absorbed; let stand 5 minutes. Fluff rice. Stir in parsley and black pepper.
Preheat broiler to high.
Combine sugar and next 5 ingredients; stir in remaining 3/8 teaspoon salt. Sprinkle half of spice mixture over chicken. Place chicken on a foil-lined jelly-roll pan coated with cooking spray. Broil 6 minutes. Turn chicken over; sprinkle with remaining spice mixture, and broil 6 minutes or until done. Remove chicken; reserve pan drippings. Let chicken stand 5 minutes. Spoon drippings over chicken; serve with rice.