Step 1

Cook pasta according to package directions. Meanwhile, in a large skillet, saute tuna in 1 tablespoon oil until fish flakes easily with a fork; cool.

Step 2

In a jar with a tight-fitting lid, combine the lemon juice, oregano, garlic, salt, pepper and remaining oil; shake well.

Step 3

Drain pasta and rinse in cold water.

Step 4

In a large salad bowl, combine the pasta, tuna, cucumber, onion, olives, tomato and feta cheese. Drizzle with dressing; gently toss to coat.