Combine flour, pepper, and 1/8 teaspoon salt in a shallow dish. Dredge turkey in flour mixture, coating both sides; shake off excess flour.
Place a large nonstick skillet coated with cooking spray over medium-high heat. Add 1 teaspoon oil and half of cutlets; cook 3 minutes on each side or until lightly browned. Repeat procedure with 1 teaspoon oil and remaining cutlets; remove from pan and keep warm.
Pour 1 teaspoon oil into a medium saucepan; place over medium-high heat. Add onion and garlic; sauté 3 minutes or until tender. Add tomatoes and next 7 ingredients; bring to a boil. Reduce heat and simmer, uncovered, 10 minutes, stirring occasionally. Spoon sauce over turkey cutlets; serve immediately.