Combine lamb, flour, pumpkin-pie spice, 1/4 teaspoon salt, and black pepper in a large zip-top plastic bag; seal and toss well. Set aside.
Place a large nonstick skillet coated with cooking spray over medium-high heat until hot.
Add lamb; cook 5 minutes or until browned on all sides.
Drain lamb; set aside. Recoat skillet with cooking spray.
Add onion, garlic, and bay leaves; saut 5 minutes or until onion is tender. Return lamb to skillet.
Add 1/4 teaspoon salt, tomatoes, cumin, sugar, and red pepper; cover, reduce heat, and simmer 10 minutes, stirring occasionally. Gently stir in okra; cover and simmer an additional 5 minutes. Discard bay leaves.