1. Preheat oven to 425°.
2. Combine first 3 ingredients and 1 teaspoon oil in a large bowl; toss well. Place cauliflower mixture in an 11 x 7–inch baking dish coated with cooking spray. Bake at 425° for 20 minutes.
3. Heat remaining 1 teaspoon oil in a medium nonstick skillet over medium-high heat. Add black pepper to pan, and sauté 1 minute. Add garlic; sauté for 30 seconds. Stir in ketchup; cook 2 minutes, stirring occasionally. Stir in red pepper; reduce heat, and simmer 3 minutes or until thick.
4. Remove cauliflower mixture from oven. Stir in ketchup mixture. Bake at 425° for an additional 20 minutes or until cauliflower is tender, stirring after 10 minutes.