01 - Set the oven to 425°F and let it come to temperature while you prepare the vegetables.
02 - Place the zucchini, red and yellow bell peppers, red onion, eggplant, cherry tomatoes, and chickpeas in a large mixing bowl.
03 - Drizzle olive oil over the vegetables and chickpeas. Sprinkle with oregano, thyme, smoked paprika, salt, and pepper. Toss until everything is evenly coated.
04 - Arrange the seasoned mixture on a large parchment-lined baking sheet in a single, even layer to promote proper caramelization.
05 - Roast for 25 to 30 minutes, stirring once at the halfway mark, until the vegetables are golden-edged and tender.
06 - While the vegetables roast, whisk together the tahini, lemon juice, water, minced garlic, cumin, and salt in a small bowl until smooth and creamy. Thin with additional water if a lighter consistency is preferred.
07 - Divide the cooked quinoa or brown rice among four serving bowls, then mound the roasted vegetable and chickpea mixture on top.
08 - Drizzle each bowl generously with the tahini-lemon dressing and finish with chopped fresh parsley, kalamata olives, and lemon wedges. Serve warm.