01 - Preheat oven to 425°F. Line a baking sheet with parchment paper.
02 - Toss zucchini, bell peppers, red onion, and eggplant with olive oil, salt, and black pepper. Spread evenly on the baking sheet.
03 - Roast for 20–25 minutes, stirring halfway, until vegetables are tender and slightly caramelized. Cool slightly.
04 - Place couscous in a heatproof bowl. Add 1 cup boiling water, salt, and olive oil. Cover and let sit for 5 minutes. Fluff with a fork.
05 - In a small bowl, whisk together olive oil, lemon juice, minced garlic, oregano, salt, and pepper.
06 - In a large bowl, combine couscous, roasted vegetables, cherry tomatoes, olives, feta, parsley, and mint.
07 - Pour dressing over the salad and toss gently to combine. Serve warm, at room temperature, or chilled.