Preheat oven to 425 F, line 2 large baking sheets with parchment paper.
On a lightly floured surface, roll dough out to ⅛" thickness. Use a pizza wheel to cut it into thin strips.
Carefully wrap strips of pastry dough around a filled jalapeno half, leaving some open area for the eyes (after baking).
I will usually roll one strip in a diagonal spiral one way, then a second spiral criss-crossing the first.
Squeeze all over, to join layers of dough to each other.
Arranged wrapped jalapeno poppers on prepared baking pan.
In a small bowl or cup, whisk the egg with 1 tablespoon water until smooth.
Use a pastry brush to brush this egg wash all over each wrapped wiener.
Bake for 18-20 minutes. For a more browned finish, do a second brushing of egg wash, bake for an additional 2 minutes.
Carefully place two candy eyeballs in the hot cheese of each popper. Alternatively, you can use olive slices.
Serve hot, with ranch dressing