Heat 1/2 tablespoon olive oil in a skillet over a medium heat. Add the diced pancetta. Cook the pancetta through until crisp and golden. Remove from the skillet with a slotted spoon and set aside.
Step 2
While the pancetta is cooking, you can prepare the vegetables. Very thinly slice the radishes, onion and fennel. Arrange the lettuce leaves in a large salad/serving bowl. Add the fennel, onion, and radishes. Season with salt and pepper and toss to combine.
Step 3
Scatter the crispy pancetta over the salad. Drizzle over the remaining olive oil and lemon juice. Leave to stand for 10 minutes before serving.