Heat oven to 400°F. Unfold the pastry sheet on a cutting board. make sure the seams from being folded don't have holes. If they do, just pinch them closed.
Place pastry sheet onto a baking sheet pan. Place the cheese round in the center of the pastry sheet.
Spoon the jam onto the cheese round. Then sprinkle on the pecan pieces.
Fold the pastry up, starting with the corners, over the cheese round to cover it. Press the seams together to seal.
Whisk the egg and water together in a small bowl. Brush the seams and the entire exposed area of the pastry with the egg mixture. You won't use all of it.
Bake for 20-25 minutes or until the pastry is a nice golden brown. Then remove from the oven and let stand for 10 minutes before transferring to a serving plate (It is best to bake the Brie to the point that it is gooey, but not completely melted so that it can hold its form).
Drizzle the warm honey all over the top, and a few chopped pecans. Serve with crackers or bread.