Sauté the Veggies: Heat oil or butter in a pan. Add ginger-garlic paste and sliced onions. Sauté for a minute until translucent, keeping them slightly crunchy.
Add Spices & Paneer: Toss in the sliced bell peppers, red chili powder, turmeric, garam masala, and salt. Stir well on medium heat. Add the paneer cubes and gently mix so the spices coat the paneer well. Cook for 3–4 minutes.
Finish the Filling: Turn off the heat, add lemon juice and chaat masala. Mix gently and let the filling cool down completely before rolling (this prevents the roll from becoming soggy).
Prepare the Roti Base: Take a soft wheat roti. Spread a thin layer of mayonnaise or butter first (this creates a barrier so the chutney won't make the roti soggy by lunchtime). Top it with green chutney.
Assemble and Roll: Place a generous portion of the spiced paneer filling in the center. Sprinkle some fresh onions and chaat masala if desired.
Pack Securely: Fold the bottom edge of the roti inward, then roll it tightly from the sides. Wrap the bottom half firmly in parchment/butter paper to lock the wrap in place.