In a large bowl, transfer the blended green paste.
Now add besan/gram flour and spices like fennel powder, cumin powder, coriander powder and chat masala. And also add kasoori methi, sugar, lemon juice and crushed black pepper.
Give it a good mix. Now the green marinade is ready.
Transfer the paneer cubes to marinade & gently coat with the green paste both sides.
Also keep this coated paneer for minimum 20 to 30 mins at room temperature or couple of hours in the refrigerator
Similarly to the green paste, add all the veggies like onion cubes and tomato. Likewise add bell peppers (Red, Green, Yellow and Orange) and sweet potato cubes.
Mix every thing well and keep it aside.
Meanwhile soak the wooden skewers in water for 5 minutes. Because to avoid burning while cooking paneer and veggies.
After marination, insert the marinated paneer cubes and all veggies alternatively into the skewers.
Furthermore heat a grill pan or tawa on medium flame and sprinkle oil all around.
Place the skewers on the tawa and roast both sides. Make sure you have to turn it all sides until it is perfectly cooked.
Now the tasty, yummy hariyali paneer tikka is ready to serve!
Serve this with a green chutney or sweet tamarind chutney and enjoy.