Heat your grill to medium high.
Brush the peaches with olive oil and grill for 2 - 3 minutes per side, until lightly charred. Remove from grill and slice into wedges.
Spread 1/4 cup of pesto on each flatbread then top each with 2 oz prosciutto, 2 oz of shredded cheese and the grilled peach slices.
Place the prepared flatbread on the grill and cook for 2 - 3 minutes, until the flatbread has a light char and the cheese is melted.
Remove from the grill, sprinkle arugula over the flatbread and drizzle with hot honey. Slice, serve and enjoy!