Ingredients

• 2 tablespoons olive oil
• 1 large onion, diced
• 1 pound large shrimp, peeled and deveined
• 1 pound scallops, rinsed and patted dry
• 1 (6 ounce) can crabmeat, drained and flaked
• 1 (12 ounce) can water packed tuna, drained and flaked
• salt and pepper to taste
• 1 tablespoon seafood seasoning, such as Old Bay™
• 1 cup mayonnaise, or to taste
• 2 tablespoons yellow mustard
• 1/2 teaspoon garlic powder, or to taste
• 1 teaspoon dried oregano
• 1/2 teaspoon ground turmeric
• 2 tablespoons white sugar
• 1 large green bell pepper, chopped
• 2 stalks celery, chopped
• 5 hard-cooked eggs, chopped
• 1 hard-cooked egg, sliced
• 1/2 teaspoon paprika, as garnish