Soak chickpeas overnight for 8-9hrs and wash them and pressure cook with enough water for 3 whistles, reduce the flame and cook for another 5-8 mins. Chickpeas should cook thoroughly and soft but firm and also should not become mushy. Drain them and keep them aside to cool. You can also use canned chickpeas.
Pressure cook potato for 3 whistles along with chickpeas or separately. Let it cool completely and then peel the skin and chop into small cubes.
In a small bowl, make the dressing mix in olive oil, lemon juice, salt, chaat masala, red chili powder, black pepper powder, roasted cumin powder and mix well using a small wire whisk until you get a uniform paste.
Take a big bowl and add boiled chickpeas, boiled and chopped potatoes, finely chopped onion, tomato, green chili, coriander leaves, pomegranate kernels, and stir well.
Add the dressing and taste, add more salt to suit.
Serve into individuals bowls.
Garnish with chopped coriander.
Serve the Salad immediately. Left-overs can be refrigerated. In fact, it tastes even better the next day.