Tuna Jefferson

Name: Tuna Jefferson
Ingredients: 2 large handfuls mixed greens; 2 very thin slices red onion; 1/2 small yellow hot pepper; 5 - 6 black olives; 1/2 medium tomato; 1 large artichoke heart; 1 hard-boiled egg; 1 4 - 5 oz tuna steak; 1.5 oz feta cheese; 1/2 tablespoon capers; 2 pickled pepperoncini; Tuna marinade; 3 tablespoons olive oil; 3 tablespoons fresh lemon juice; 1 large clove garlic; 1 teaspoon dried oregano