1. Heat grill pan over medium-high heat. Sprinkle fish evenly with 1/2 teaspoon salt. Coat pan with cooking spray. Arrange fish in pan; cook for 4 minutes on each side or until fish flakes easily when tested with a fork or until desired degree of doneness.
2. While the fish cooks, combine remaining 1/4 teaspoon salt, bell peppers, and remaining ingredients in a blender or food processor, and process until smooth. Serve pesto over fish.
Sustainable Choice: Look for salmon that's labeled "wild Alaskan," and you can be sure that you're getting a sustainable option.