In a mixing bowl, add 1¾ cups of wheat flour, 2 tablespoons of rava, 1 tablespoon of gram flour, salt, 1 tablespoon of oil, and some coriander leaves. Mix well.
Now, in a separate bowl, spread a cotton cloth and grate the dudhi (lauki) using a large-holed grater. Then squeeze the water from the grated dudhi into a bowl.
Add the dudhi water to the dough and, if needed, add some regular water to knead a medium-soft dough for the parathas. Add some oil and knead the dough until it becomes smooth and starchy. Apply a little oil to the dough and let it rest for 10 minutes.
In a mixing bowl, take 1 cup of grated lauki, add ½ cup of finely chopped onion, 2 chopped green chilies, ½ teaspoon of grated ginger, ¼ teaspoon of turmeric powder, ½ teaspoon of red chili powder, ½ teaspoon of cumin powder, 1 teaspoon of chaat masala, ½ teaspoon of garam masala, 1 tablespoon of sesame seeds, and some coriander leaves. Mix well.
Add a pinch of salt and 1 cup of aloo bhujia sev to the mixture. Mix well, and the stuffing is ready. Set it aside.
After the dough has rested for 10 minutes, knead it slightly and pinch off a ball-sized portion of dough.
Roll the dough into a slightly thin circle.
Spread the stuffing in the center in a triangular shape.
Carefully fold and close all sides of the paratha to form a triangle. Press gently and sprinkle some flour, then roll it out slightly.
Place the rolled paratha on a hot tawa.
Apply 1 teaspoon of oil or ghee and cook the paratha.
Roast the lauki paratha on a medium-low flame until both sides are browned and uniformly roasted.
Serve the lauki paratha with fried chilies, butter, and raita.