Take minced chicken in a bowl. And add chopped garlic, chopped green chili and pepper powder. Combine them well.
Keep it aside for 15 mins. After that make patty with the chicken mixture.
Now heat the oil on the griddle and place the chicken patty on the griddle when griddle is hot enough.
Grill it on the medium flame and turn it to the other side . Cook it until it turn golden brown on two sides.
After that put barbecue sauce on the patty and spread it well. Grill it again . Then add mustard sauce and grill the patty with mustard sauce as well.
Now take the patty in a plate and let it come to the room temperature.