Cook the eggs in a pan of boiling water for 7 mins, then set aside in cold water. Tip the lentils into a saucepan and gently warm. Stir through the mixed antipasti in their oil, along with the tuna in large flakes. Season to taste. Gently peel the eggs and slice them in half. Spoon the warm lentils into bowls and top each one with the halved eggs and black pepper.