1 (12-pound) fresh or frozen turkey, thawed
1 1/2 teaspoons ground cumin
1 teaspoon chili powder
1 teaspoon dried rubbed sage
3/4 teaspoon garlic powder
1/2 teaspoon ground red pepper
1/4 teaspoon ground tumeric
Cooking spray
1/2 cup boiling water
1 to 2 chipotle chiles
3 3/4 cups fat-free, less-sodium chicken broth, divided
3 tablespoons tomato paste
1 tablespoon Worcestershire sauce
1/4 cup all-purpose flour
Chile peppers
Assorted herb sprigs (optional)