Chicken Marsala

6 boned chicken breasts
Salt and pepper
Onion and garlic powder
Worcestershire sauce
1/4 cup flour
3 tablespoons olive oil
3 tablespoons butter
1/4 cup parsley
2 cloves garlic
1 large onion
2 ribs celery
1 (16 ounce) can tomatoes
1 can chicken stock
1/2 teaspoon rosemary
1 bay leaf
1 teaspoon salt
1/4 teaspoon pepper
1 cup Marsala wine
1/2 pound sliced mushrooms

Season chicken well with salt and pepper, onion and garlic powder and Worcestershire sauce. Coat with flour; shake off excess. Saut