Cut paneer in nine squares.
Chop one large onion and bell pepper. The size of the chopped onions and bell pepper should be similar to the paneer cubes.
Add thick curd, red chili powder, garam masala, chat masala and salt, coriander powder, and turmeric powder in a mixing bowl.
Add garlic paste, ajwain seeds, dried fenugreek leaves, and mustard oil to the same mixing bowl.
Then, add the onion and bell pepper into the marinade and coat them properly.
Add the paneer cubes to the marinade and mix.
Cover and place the bowl in the refrigerator for one hour.
After taking the mixture out, thread the paneer, onions, and bell pepper on a skewer.
Spray some oil on a heated tawa. Place the skewers on the center and grill them on medium heat.
Turn the skewers constantly to grill the ingredients evenly. Grill them until they turn golden yellow.
Place the skewers on the serving plate and serve with green chutney.