Wash the chicken fillets and pat them dry. Place 1-2 sage leaves on each and wrap 1 slice of bacon around each. Wash the tomatoes and peel them all around in approx. 1 cm wide strips without removing them.
Roll up the bowl and form into florets. Cut the tomato flesh roughly. Cut remaining sage into strips. Heat oil in a large frying pan. Brown the fillets on each side, season with salt and pepper.
Add tomato flesh, braise for 5 minutes and deglaze with stock. Season with salt, pepper, sage strips and vinegar, braise for another 5 minutes. Cook the gnocchi for 2 minutes in bubbling salted water. Then drain and fry briefly in melted butter.
Serve gnocchi, tomato sauce and chicken fillets in portions garnished with tomato florets and fresh sage.