1. Place first 6 ingredients in a blender; blend until smooth.
2. Combine turkey, breadcrumbs, and chili powder in a large bowl; using wet hands, shape into 16 meatballs.
3. Heat a large skillet over medium-high heat. Lightly coat pan with cooking spray. Add meatballs; cook 2 minutes, turning to brown on all sides. Add tomato mixture to pan; bring to a simmer. Cover, reduce heat, and simmer for 6 minutes or until the meatballs are done.