Cook Couscous – Boil 1½ cups pearl couscous in salted water or broth for 7–10 minutes until al dente. Drain, transfer to a bowl, and let cool for 10 minutes.
Prep Veggies – Chop 2 cups cherry tomatoes, 1½ cups cucumber, 1 cup green bell pepper, 4 scallions, ½ cup kalamata olives, ½ cup sun-dried tomatoes in oil, and 1 cup flat-leaf parsley. Rinse 1 can (15 ounces) chickpeas. Add everything to the cooled couscous. Optionally, crumble in the feta.
Make Dressing – Whisk 3 tablespoons extra virgin olive oil, 2 tablespoons lemon juice, 1 tablespoon Dijon mustard, 1 tablespoon maple syrup, 1 clove garlic, ¾ teaspoon salt, 1 teaspoon cumin, and pepper. Pour over the salad and toss to combine.
Serve – Adjust seasoning to taste. Top with sumac onions, jalapeños, pine nuts, or yogurt-tahini sauce if desired. Serve cold or at room temp.