Preheat the oven to 350°F and lightly grease a 9x13-inch baking dish with cooking spray.
Cook the meat: In a large skillet over medium heat, cook the diced sausage or bacon until browned, about 2–3 minutes per side. If using bacon, leave behind some of the rendered fat for added flavor.
Prepare the broth: In a medium bowl, whisk together the chicken stock and tomato paste until well combined.
Sauté the vegetables: Add the chopped onion and bell pepper to the same skillet and cook for 4–5 minutes, or until softened. Stir in the minced garlic and cook for another 30 seconds.
Season the mixture: Sprinkle in the salt, sugar, Worcestershire sauce, stewed tomatoes, cayenne, black pepper, and the cooked sausage or bacon. Let it simmer for about 5 minutes, breaking up the tomatoes with a spoon as it cooks.
Add the rice: Stir in the rinsed rice, ensuring everything is evenly mixed. Bring the mixture to a gentle boil, then reduce the heat and simmer for 5 minutes.
Bake to perfection: Carefully transfer the rice mixture to the greased baking dish, cover with foil, and bake for 35–45 minutes, or until the rice is fully cooked and tender.
Serve: Fluff the rice with a fork, garnish with sliced scallion greens, and enjoy this flavorful Lowcountry classic.