Peel the onion and cut into strips. Wash the chicken fillets, dab dry and cut in half crosswise. Wrap 1 slice of bacon around each piece and fix with wooden skewers.
Preheat oven (electric cooker: 250 °C/circulating air: 230 °C/gas: see manufacturer). Heat the oil in a pan, fry the meat thoroughly all around, season with pepper and remove. Sauté onion in hot frying fat for approx. 4 minutes. Wash the cherry tomatoes. Wash thyme, shake dry. Add both. Deglaze with chunky tomatoes and cream. Bring to the boil, season to taste with salt and pepper. Grate cheese roughly.
Spread the tomato cream and the pieces of meat in an ovenproof dish. Sprinkle with cheese. Bake in a hot oven for about 10 minutes. Baguette tastes good with it.