In a small mixing bowl, add all spice ingredients. Stir and set aside. Store extra in a airtight container up to three months.
Season fish filets heavily. Butter a flat top grill or a skillet over medium high heat. Add filets. and sear for 3-4 minutes, then flip and continue to cook for 3-4 minutes or until desired doneness.
while fish is cooking, put roma tomatoes in skillet over medium high to high heat and sear. As they begin to release liquids, add in green onions, Italian parsley, lemon juice, dill, capers and salt and pepper. Cook for 4-5 minutes or until melded.