Marinate the salmon (1 hr): Whisk together the soy sauce, brown sugar, olive oil, lemon juice, lemon zest, parsley, salt, and pepper in a large bowl. Add the salmon and turn to cover. Cover with plastic wrap and marinate in the refrigerator for at least 1 hour or up to 8 hours.
2 Tablespoons soy sauce, 3 Tablespoons brown sugar, 2 Tablespoons olive oil, 2 Tablespoons lemon juice, 1 Teaspoon lemon zest, 1/4 cup finely chopped parsley, 1 Teaspoon kosher salt, Black pepper to taste, 4 (4-6oz) skin-on salmon filets