1. Combine first 4 ingredients in a small bowl. Combine cumin, salt, and garlic powder in a large bowl.
2. Preheat oven to 450°. Place baking sheet in oven.
3. Toss potatoes with oil. Arrange potatoes in a single layer on preheated baking sheet coated with cooking spray. Bake at 450° for 10 minutes. Turn potatoes; bake an additional 5 minutes or until golden and crisp. Add potatoes to cumin mixture; toss gently to coat. Serve immediately with ketchup mixture.