How to Make It
Stir together yogurt, garlic, ginger, garam masala, lemon juice, chaat masala, and turmeric in a medium bowl until combined; measure 1/4 cup yogurt marinade into a separate small bowl. Add onion and bell pepper to remaining marinade in medium bowl; toss to coat. Add paneer to 1/4 cup marinade in small bowl; toss to coat. Cover each bowl; refrigerate at least 30 minutes or up to 8 hours.
Preheat oven to 500°F with oven rack 6 inches from heat source. Spread marinated vegetable mixture in an even layer on a rimmed baking sheet lined with aluminum foil. Roast in preheated oven until mixture is just charred in spots, about 12 minutes, stirring once halfway through cook time. Remove from oven. Increase oven temperature to broil. Stir marinated paneer into vegetable mixture on baking sheet. Return to oven, and broil until paneer is cooked through and vegetables are crisp-tender, 6 to 8 minutes. Transfer mixture to a medium bowl; toss with salt. Cover to keep warm; set aside. Reduce oven temperature to 200°F.
Rinse onion under cold water; drain. Stir together onion, cabbage, lime juice, jaggery, salt, and pepper in a medium bowl. Set aside.
Cook parathas according to package directions. Transfer parathas to a baking sheet; place in preheated oven to keep warm.
Remove 1 paratha from baking sheet. Place an 8-inch square piece of aluminum foil on a work surface; place paratha on foil so that paratha is half on foil and half on work surface. Spread 1 tablespoon spicy mango-mint chutney evenly over paratha. Spread 1/3 cup cabbage salad in center of paratha; top with about 1/3 cup filling. Sprinkle lightly with chaat masala. Roll up paratha burrito-style, folding bottom up and sides in toward center, using foil to secure. Repeat process using remaining parathas, chutney, cabbage salad, filling, and chaat masala.
Look for parathas in the freezer section at your local Indian or Asian market.