In a wide bowl, add chickpeas and rest of the vegetables, salt, lemon juice and dry spices.
3 tins Chickpeas, 1 large Onion, 1 medium Tomato, 2 small Potatoes, 1 Green Chilli, ¼ teaspoon Chilli Powder, ½ teaspoon Chaat Masala, ½ teaspoon Roasted Cumin Powder, Lemon Juice, Salt