For measurements and the list of ingredients for the recipe, please refer to Entertaining From an Ethnic Indian Kitchen.
Prep: If you are using bamboo skewers, soak them in water for at least half an hour.
In a medium sized non-reactive bowl, add yogurt, ginger garlic paste, lime juice, chickpea flour, cayenne, turmeric, ajwain powder, salt and 1 teaspoon chaat masala powder. Stir to combine.
Note: A non-reactive bowl is a bowl that will not have a chemical reaction with the foods that are placed in it. In this recipe, lime juice, which is highly acidic, would have had a chemical reaction with the metal in an aluminum bowl, giving the marinade a metallic taste...which you do NOT want! To sum up, do not use an aluminum bowl for this marinade.
Add paneer, bell peppers, and red onions. Mix thoroughly until all the pieces are evenly coated with the marinade. Cover and marinate for 1/2 - 1 hour in the refrigerator.
Preheat grill to medium high. Thread the paneer and vegetables onto the skewers. Grill them until evenly charred.
Alternative: You can broil these kabobs in the oven. Place skewers on a baking sheet lined with a metal rack. Place baking skeet with skewers 5-6 inches below the heating element. Broil while turning in between once or twice for 5-7 minutes or until golden brown. Remove from the oven.
Sprinkle with 1/4 teaspoon of chaat masala powder and serve.