Preheat oven to 400°F.
Prepare a flat sheet pan with parchment paper.
Place the 5" pastry squares onto parchment paper,
Brush top of dough with beaten egg.
Bake the pastry in the oven for 15-16 minutes or until golden brown.
While dough bakes, prepare shrimp and sauce. Put olive oil and butter in a heavy pan over medium heat until butter is melted.
Add "white" green onion and garlic to pan. Sautee until fragrant, about 1-2 minutes.
Add shrimp in a single layer in pan and sprinkle with paprika, red pepper flakes and salt and pepper. Cook 2-3 minutes per side.
Use tongs to remove just the shrimp from the pan. Reserve sauce/drippings for the next step.
Add cut tomatoes to pan. Sautee for 2-3 minutes until they begin to burst. Add "green" onions, white wine, chicken broth, fresh squeezed lemon and dijon mustard to the pan. Cook until mixture reduces by ½.
Mix water and flour in a small bowl until smooth. Add to pan, combine.
Once it starts to thicken, add the shrimp back into pan. Cook for 2 more minutes to coat and reheat shrimp. Be careful to not overcook shrimp.
Plate by positioning the puff pastry and topping with shrimp and sauce. Garnish with chopped parsley and lemon wedge.