Preheat oven to 180°C. Heat oil in a non stick pan, add garlic and chicken and saute till lightly coloured. Sprinkle salt.
Grind rajma with a little of the water in which it was boiled, salt, paprika, coriander leaves, juice of ½ lemon and grind till smooth. Pour this into a baking dish.
Add onion to chicken along with tomatoes, red capsicum, jalapenos, cumin powder, red chilli powder and mix.
Transfer this into the baking dish over the rajma sauce. Place corn chips all around the edges of the dish.
Sprinkle cheese and bake in the preheated oven for 10-15 minutes or till chicken gets cooked and cheese bubbles.Serve hot.