Piadina with tomato and grilled eggplant

Ingredients

• 4 piadinas, Italian flatbread
• 2 small or 1 large (white) eggplant
• 6 tomatoes
• 8 slices of raw ham
• A large handful of mixed salad greens – e.g., rocket or lamb’s lettuce
• 4 tablespoons of red pesto
• Olive oil
• Pepper and salt