Lay out the puff pastry sheets at room temperature for about 20 minutes to thaw.
Cut the ham and drained pineapple slices into small cubes. In a bowl, mix the ham, pineapple, cream cheese, and frozen herbs together. Season with salt and pepper.
Gently roll out each puff pastry sheet slightly and cut each into 4 equal squares. Top each square with about 1 heaping teaspoon of the cream cheese mixture. Press the right and left corners together with your thumb and forefinger to form a boat shape. Arrange the boats on a baking sheet lined with baking paper.
Preheat the oven to 180°C (350°F). Bake for 20-25 minutes until golden.