How to Make It
Combine 1 tablespoon juice and 1 1/2 teaspoons oil in a bowl. Add fish; toss to coat. Let stand at room temperature 10 minutes, turning after 5 minutes.
Heat a large skillet over medium-high heat. Coat pan with cooking spray. Remove fish from marinade; discard marinade. Pat fish dry with paper towels; sprinkle with 1/4 teaspoon salt and black pepper. Add fish to pan; cook 5 minutes on each side or until desired degree of doneness.
Combine remaining 1 1/2 teaspoons juice, remaining 1 1/2 teaspoons oil, remaining 1/8 teaspoon salt, tomato, and remaining ingredients in a bowl. Serve with fish.