To prepare salsa, combine the first 7 ingredients in a small bowl; toss well.
To prepare tacos, preheat broiler.
Place fish on a broiler pan coated with cooking spray; sprinkle fish evenly with seasoning. Broil 6 minutes or until desired degree of doneness.
Heat a medium nonstick skillet over medium-high heat. Lightly coat tortillas with cooking spray. Add the tortillas to pan, 1 at a time; cook 1 minute on each side or until lightly toasted. Divide fish evenly among tortillas; top each taco with 1/4 cup greens and 1/4 cup salsa. Serve immediately.