01 - Preheat the broiler or grill to high heat. Place red bell peppers directly under the broiler or on the grill, turning occasionally, until skins are charred and blistered, approximately 10 minutes. Transfer peppers to a bowl, cover with plastic wrap, and allow to steam for 5 minutes.
02 - Peel off and discard the charred skin from the steamed peppers. Remove all seeds and membranes, then slice the roasted peppers into thin strips.
03 - In a large salad bowl, combine drained chickpeas, roasted pepper strips, diced cucumber, sliced red onion, halved cherry tomatoes, torn basil leaves, and olives if using. Toss gently to distribute ingredients evenly.
04 - In a small bowl or jar, whisk together extra-virgin olive oil, lemon juice, minced garlic, dried oregano, sea salt, and black pepper. Whisk vigorously until the mixture is fully emulsified and creamy.
05 - Pour the prepared dressing over the salad mixture. Toss gently to coat all ingredients evenly without crushing the chickpeas. Top with crumbled feta cheese if desired. Serve immediately, or refrigerate for 30 minutes to allow flavors to meld together.