How to Make It
Cook pasta according to package directions.
Meanwhile, heat 1/2 tablespoon of the oil in a large skillet over high. Add shrimp and lemon quarters, cut-side down. Cook until shrimp is opaque, 4 to 6 minutes, turning shrimp and lemon quarters halfway through. Transfer shrimp (leave lemons in skillet) to a plate, and cover to keep warm.
Add wine to skillet; bring to a boil over medium-high, stirring and scraping to loosen browned bits from bottom of skillet. Boil until liquid is nearly evaporated, about 4 minutes. Add chicken stock; cook, stirring occasionally, until slightly reduced, 2 to 3 minutes. Remove from heat. Add capers, lemon juice, butter, salt, pepper, and remaining 2 1/2 tablespoons oil; stir until butter is melted.
Add shrimp to skillet, stirring to combine. Serve over pasta, and sprinkle with parsley.