In a small Dutch oven, cook bacon over medium heat until crisp. Remove bacon using a slotted spoon, and let drain on paper towels, reserving drippings in pan. Add onion, bell pepper, and celery; cook over medium-high heat until lightly browned and softened, 8 to 10 minutes. Stir in tomatoes, tomato paste, brown sugar, vinegar, thyme, Creole seasoning, salt, paprika, and garlic powder. Reduce heat to medium-low; simmer for 10 minutes. Stir in rice. Spoon into prepared pan; spray heavy-duty foil with cooking spray and cover.