Marinate the chicken pieces with the mustard oil, yoghurt, ginger garlic paste, chili powder, garam masala, cumin powder, turmeric powder, 1 tbsp lemon juice, kasuri methi and salt to taste. Keep it aside for at least 30 minutes
Thread them in skewers and bake* in a pre-heated oven for 25 minutes for 20-25 minutes or until cooked, at 180°C. Remove and let the kebabs come to room temperature
In the meanwhile, heat a cooking pot with 2 tbsp oil and add the peppers and onions, on high heat, so that they char on the edges
Then add the kebabs, chilis, half of the coriander, pink/black salt and 2 tbsp lemon juice. Mix throughly, cook for 2-3 minutes and then remove from flame. Set aside until needed
In a bowl, whisk an egg with a touch of salt, pepper and coriander leaves, until frothy. Heat the skillet over medium, add a tsp of cooking oil and pour in the egg mixture. Cook for 2 minutes and then place the paratha on it. If the egg spills out, tuck it in using a spatula. Cook until the egg is done and then remove from flame
Place a paratha egg side up, on a flat surface and sprinkle a tsp of chaat masala over, then layer the stuffing - first place the cucumbers, then the chicken kebabs and onion red peppers mixture. Drizzle some more chaat masala, lemon juice and coriander leaves
Start rolling the flatbread from one side and secure with toothpicks. Serve the delicious Kolkata style egg chicken roll with some ketchup for your evening chai, brunch or snack. Enjoy!