Heat the oven to 425°F and line a large sheet pan with parchment.
Cook the quinoa: In a saucepan, combine the quinoa, water or broth, and salt. Bring to a boil, reduce to low, cover, and simmer 15 minutes. Turn off the heat and let stand 5 minutes covered, then fluff with a fork.
On the sheet pan, toss the sweet potato, delicata, and red onion with 1 Tbsp olive oil, 1/2 tsp salt, pepper, paprika, and cinnamon (if using). Spread in a single layer.
Pat the chickpeas dry and toss with the remaining 1 Tbsp olive oil and 1/4 tsp salt.
Roast the vegetables for 20-25 minutes, flipping once, adding the chickpeas to the pan for the last 10 minutes to crisp.
Whisk together the vinaigrette ingredients (or shake in a jar). Massage the chopped kale with a tiny drizzle of olive oil and a pinch of salt for 30-60 seconds, until darker and slightly tender.
Divide the quinoa and kale among 4 bowls. Top with roasted veg and chickpeas, then radishes, apple, pepitas, and herbs. Add feta or goat cheese if using, drizzle with vinaigrette, and serve warm.