Grilled Fish Sandwiches

Name: Grilled Fish Sandwiches
Prep time: 10 min
Cook time: 10 min
Total time: 20 min
Yield: 4
Ingredients: Ingredients; Fish; 4 white fish fillets (such as cod, halibut, or mahi-mahi); 2 tablespoons olive oil; 1 tablespoon lemon juice; 1 teaspoon garlic powder; 1 teaspoon smoked paprika; 1/2 teaspoon salt; 1/4 teaspoon black pepper; Sandwich; 4 sandwich buns or rolls; 1/4 cup mayonnaise; 1 tablespoon Dijon mustard; 1 tablespoon lemon juice; Lettuce leaves; Sliced tomatoes; Sliced red onion; Pickles (optional)