01 - Preheat oven to 425°F. Line two baking sheets with parchment paper.
02 - Pat chickpeas completely dry with a clean towel. Toss with olive oil, smoked paprika, cumin, garlic powder, salt, and pepper until evenly coated. Spread on half of one baking sheet in a single layer.
03 - Arrange sweet potato, bell pepper, zucchini, and red onion on the second baking sheet. Drizzle with olive oil, sprinkle with oregano, salt, and pepper. Toss vegetables to coat evenly.
04 - Roast both trays for 25-30 minutes, stirring once halfway through cooking. Chickpeas should be crisp and vegetables tender with lightly browned edges.
05 - Combine rinsed quinoa, water or broth, and salt in a saucepan. Bring to a boil over high heat. Reduce heat to low, cover, and simmer for 15 minutes. Remove from heat and let stand, covered, for 5 minutes. Fluff with a fork.
06 - Whisk together tahini, lemon juice, water, maple syrup, garlic, salt, and pepper until smooth and creamy. Add additional water, 1 teaspoon at a time, if needed for pourable consistency.
07 - Divide cooked quinoa among four bowls. Arrange roasted vegetables, crispy chickpeas, fresh greens, and pumpkin seeds on top. Drizzle generously with tahini dressing. Garnish with chopped fresh herbs if desired and serve immediately.