Brown the lamb chunks in 2 Tbsp olive oil, until dark golden.
Add the onion and cook until golden, salt and pepper liberally. Add the paprika, and stir and cook until well caramelized.
Add the tomatoes, cook until they have blended with the rest. Add the beans, cover with water, add 1 tsp salt, one half of the mint and one half of the cilantro. Cook about 1 hour, or until the meat is tender.
Add the greens or zucchini and the pasta and cook 15 minutes. Serve garnished with the remaining mint and cilantro and a squeeze of fresh lemon juice.