Press shrimp between layers of paper towels to remove excess moisture. Repeat if necessary. Combine shrimp, 1 tablespoon parsley, lemon juice, if desired, and pepper in medium bowl; mix well.
Spread cream cheese in bottom of a 9-inch tart or pie plate or spread into a 9-inch circle on large rimmed serving platter.
Top evenly with shrimp mixture and shrimp sauce. Sprinkle evenly with cheese, red pepper, green onions and remaining 1 tablespoon parsley. Cover and chill until ready to serve. Serve with assorted crackers.