Preheat the grill over medium heat - to about 350 or 400 degrees F.
Slice the peaches in half and remove the pit. Slice the halves in half again, so you have 4 wedges for each peach. Tear or cut the prosciutto slices in half.
Wrap half of a slice of prosciutto around each peach wedge. You can place the peaches on a grill pan or grill directly on the grates.
Place the prosciutto wrapped peaches on the grill and cook, turning every few minutes, for about 10 to 12 minutes, until the prosciutto is crispy and cooked.
While the peaches are on the grill, toss the arugula with the lemon juice and olive. Season it with a pinch of salt and pepper.
Remove the peaches from the grill and serve on top of the arugula. Crumble the goat cheese on top. Sprinkle on the pepitas. Drizzle some balsamic glaze over the peach wedges.
You can serve this on a big platter where people can scoop it up themselves, or plated with a handful of arugula on the plate and 2 or 3 peach wedges. Enjoy!