Peel shrimp, leaving tails intact. Starting at tail end, butterfly underside of each shrimp, cutting to, but not through, back of shrimp. Arrange 8 shrimp, cut sides up, in each of 6 gratin dishes; set aside.
Melt margarine in a small skillet over medium heat. Add bell pepper and garlic; sauté 2 minutes. Remove from heat; stir in wine, parsley, lemon juice, salt, and pepper. Spoon wine mixture evenly over each serving; sprinkle paprika over shrimp, and broil 6 minutes or until shrimp is done. Serve with angel hair pasta.