Heat 1 tablespoon olive oil in a skillet. Add the chopped cabbage and onion. Cook over low heat for 7 minutes, stirring often, until softened.
Add the ground chicken, cooked cabbage and onion, panko, Pecorino cheese, Dijon mustard, Worcestershire sauce, egg, salt, garlic, and dried herbs to a bowl.
Mix until everything is well combined.
Heat the remaining olive oil in a skillet. Wet your hands and shape the mixture into 3 to 4 inch burger patties.
Cook the patties over medium heat for 5 to 6 minutes on one side.
Flip the burgers, cover the pan, lower the heat, and cook for another 5 minutes, or until cooked through.
Serve on buns with coleslaw, cheese, pickles, tomatoes, lettuce, and your favorite sauce.
Notes
The burger mixture will be softer than beef burgers. Wet hands make shaping much easier.
The patties can be frozen before or after cooking.
For food safety, ground chicken should be cooked to 165 degrees F in the center.