1. Sprinkle both sides of fish with seasoning. Coat a large nonstick skillet with cooking spray; place over medium-high heat until hot. Add fish, and cook 3 minutes; remove pan from heat.
2. Turn fish; top with spinach, tomato, and cheese. Return pan to heat; cover and cook 3 to 4 minutes or until spinach is hot and fish flakes easily when tested with a fork. Serve immediately.
carbo rating: 1