Set the oven to 250 degrees C, grill broiler, rack on the highest level.
Cut the chicken breasts in a butterfly way so that you have 0.5 cm thickness fillets. Brush the fillets with 1 tablespoon of olive oil and season with the salt and pepper. Place the fillets in an oven-proof baking dish and grill them on each side for 3-4 minutes. Take out of the oven and slice the fillets into strips.
In the meantime, place in a high-speed food processor with the metal blade on, the yogurt, anchovies, English mustard, garlic, wine vinegar, the Worcestershire sauce, the tabasco, lemon juice and the parmesan cheese and blend.
Take a large bowl and add the lettuce with ¾ of the sauce and toss. Remove from the bowl and add in a serving plate, then on top add the chicken strips. Drizzle the remaining sauce and toss the shaved parmesan. Season with the red Aleppo pepper.