Preheat a char-grill pan or barbecue over high heat. Place the chicken, capsicum, eggplant, zucchini, oil, lemon juice, salt and pepper in a bowl and toss to coat. Char-grill or barbecue the chicken for 3–4 minutes or until cooked through. Char-grill or barbecue the capsicum, eggplant and zucchini until tender. To serve, place the chicken, vegetables and rocket in a stack on plates and serve topped with the combined pesto and mayonnaise. Serves 4.