Start by sautéing onions, carrots, celery, and garlic in olive oil until soft. Adding miso now (if using) intensifies flavor and helps it blend beautifully with herbs.
Stir in stock, chickpeas, and lemon zest. Bring to a boil, then reduce heat to a gentle simmer. Let it cook while you prepare the dumplings, about 15–20 minutes.
Combine flatbread mix, baking powder, paprika, salt, pepper, and herbs. Mix in yogurt, olive oil, and water until smooth. Form 10 balls and gently drop them into simmering soup, letting them puff and cook for 7–9 minutes.
Ladle soup into bowls, drizzle with olive oil, sprinkle fresh dill or parsley, and add lemon wedges. Optional: a dollop of Greek yogurt adds creaminess.