Step 1

Combine cucumber, tomatoes, and 1 teaspoon salt in colander set over bowl and let stand 15 minutes.

Step 2

Whisk oil, vinegar, and garlic together in large bowl. Add drained cucumber and tomatoes, chickpeas, olives, onion, and parsley; toss and let stand at room temperature to blend flavors, 5 minutes.

Step 3

Add romaine and feta; toss to combine. Season with salt and pepper and serve.