Heat the oven and prep the pan. Set your oven to 425°F (220°C).
Line a large sheet pan with parchment for easy cleanup.
Season the vegetables and chickpeas. Toss the sweet potato, Brussels sprouts, red onion, and chickpeas with olive oil, smoked paprika, cinnamon, garlic powder, salt, and pepper. Spread everything in a single layer. Give the sprouts cut-side down contact with the pan for deeper browning.
Roast until caramelized. Bake for 25–30 minutes, stirring once halfway. You’re looking for tender centers and crisp, browned edges.
Cook the quinoa. While the sheet pan roasts, combine rinsed quinoa and water or broth in a saucepan.
Bring to a boil, reduce to a low simmer, cover, and cook for 15 minutes. Turn off the heat and let it sit, covered, for 5 minutes. Fluff with a fork.
Make the dressing. Whisk tahini, lemon juice, apple cider vinegar, maple syrup, garlic, and salt.
Add warm water a little at a time until it’s pourable but still creamy. Adjust sweetness, acid, and salt to taste.
Prep the fresh elements. Thinly slice the apple and roughly chop the baby greens if needed. Toast pepitas in a dry skillet over medium heat for 2–3 minutes until fragrant, if not already toasted.
Assemble the bowls. Add a scoop of quinoa, then pile on roasted vegetables and chickpeas.
Tuck in the greens and apple slices. Drizzle generously with the maple-tahini dressing and finish with pepitas.
Taste and finish. Add a pinch more salt, a squeeze of lemon, or an extra drizzle of maple if you want it sweeter. Serve warm or at room temperature.