Put the tomatoes in a bowl along with the liquid. Mash with a fork, season with salt and pepper then add the oil, drained chopped capers, anchovies and the oregano.
Flatten the chicken breasts with a meat mallet and lay in an oiled ovenproof dish. Season with salt and pepper; cover with the slices of cheese. Derind the bacon and lay the slices on top of the cheese. Top with the tomato mixture and cook in a moderately hot oven (190°C, 375°F) for 40 minutes.
PREPRATION TIME: 1 hour
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