In the bowl of a food processor, combine the ham and mayonnaise and pulse to blend, scraping down the bowl as necessary. Add the crushed pineapple, nuts, parsley and bell pepper and pulse to blend, scraping down the bowl as necessary. Set aside.
Arrange the lettuce on the bun bottoms. Top with the sliced pineapple, ham mixture and bun tops and serve.
Calories: 728kcal | Carbohydrates: 143g | Protein: 13g | Fat: 18g | Saturated Fat: 3g | Cholesterol: 14mg | Sodium: 506mg | Potassium: 1115mg | Fiber: 14g | Sugar: 94g | Vitamin A: 2463IU | Vitamin C: 443mg | Calcium: 205mg | Iron: 5mg