Paki hui chana chaat

Ingredients:
Boiled chickpeas 1 cup
Finely sliced onion 2
Boiled and finely sliced tomato 2
Boiled potato 2
Finely sliced green chili 3-4
Yogurt 1/8 kg
Green coriander, mint leaves ¼ bunch
Garlic 4-5 cloves
Turmeric 1 tsp

All spice powder 1 tsp
Red chili powder 1 tbsp
Cumin powder 1 tbsp
Coriander powder 1 tbsp
Chaat masala 1 tbsp
Oil 3 tbsp
Salt to taste