Preheat oven to 425 degrees.
In a large bowl, combine the lemon zest, juice, garlic, paprika, 1 TBSP oil, salt and pepper. Stir in the shrimp.
Lay 4 rectangles of foil out on the counter. Brush a little oil on each.
Divide the shrimp to one side of the center of the foil pieces. Place asparagus next to the shrimp.
Drizzle some more oil, salt and pepper on the asparagus. Add a TBSP of butter on top of each packet. Seal up, crimping all of the edges together. Place on a sheet pan.
Bake 15- 20 minutes. Rest for 2 before opening. Serve with parsley and lemon wedges.
Cut the Italian bread in half horizontally. Spread the softened butter on both sides. Sprinkle the salt, garlic powder, parsley, and paprika all over.
Broil for 2-3 minutes, or until golden brown. Cut into strips, and serve with shrimp.