Preheat oven to 375 and spray a large baking sheet with cooking spray.

Add oil to a large skillet over medium high heat and heat until shimmering. Add finely chopped mushrooms and saute for 5 minutes stirring frequently. Add spices, 2 Tbsp fresh parsley, salt and pepper. Cook for 1 minute more stirring constantly then remove from heat.

Add the chicken and egg to a large bowl then add mushroom mixture. Stir until completely combined.

Combine breadcrumbs and 1/4 cup chopped parsley. Measure a 1/3 cup of the mixture, roll it into a ball then coat with breadcrumb mixture. Transfer it to the baking sheet and press into a patty approximately ½" thick. Repeat with remaining chicken mixture, ending up with 8 patties.

Spritz the tops of the patties with cooking spray and bake 14-17 minutes, or until the patties have cooked all the way through and reached an internal temperature of 160 degrees.

Remove from oven and serve as a main course or in a sandwich. Any leftovers will freeze and reheat well.