This worked so well that I cheated and used chicken and mozzarella to make up my protein, which isn't allowed so use only the one or the other.
• 1 cup diced chicken or mozzarella or a combination
• 1 honey-crunch apple diced
• ¼ cup basil, chopped
• ¼ small green pepper ( I used orange as I didn't have green)
• 1 cup baby butter lettuce
• 1 tsp mayonnaise
• 1 tbsp vinegar
I put all the ingredients (except the lettuce) into my lunch box and mix well, then layer the lettuce on top. This will keep the lettuce from going soggy.