In a large mixing bowl, combine 200 grams of all-purpose flour (maida) and a pinch of salt. Gradually add water and knead the dough until it becomes soft and pliable. Cover the dough with a damp cloth and let it rest for 30 minutes.
In another bowl, mix 250 grams of minced chicken, 100 grams of grated cheese (preferably mozzarella or cheddar), 1 finely chopped onion, 2 tablespoons of finely chopped coriander leaves, 1 teaspoon of ginger-garlic paste, 1/2 teaspoon of black pepper powder, and salt to taste. Mix well to combine all the ingredients.
Divide the dough into small equal-sized balls. Roll out each ball into a thin, round wrapper using a rolling pin.
Place a spoonful of the chicken-cheese mixture in the center of each wrapper. Fold the edges of the wrapper and pinch them together to seal the momo. Repeat this process for all the dough balls.
Grease a steamer basket with oil to prevent the momos from sticking. Place the momos in the steamer basket, ensuring they do not touch each other.
Fill a steamer pot with water and bring it to a boil. Place the steamer basket with momos on top of the pot and cover it with a lid. Steam the momos for 15-20 minutes or until they are cooked through.
Serve the Chicken Cheese Momos hot with spicy tomato chutney or any dipping sauce of your choice.