Preheat oven to 350°F. Blind bake the pie shell until lightly brown for about 9 minutes.
Peel and slice tomatoes, place on paper towels. Salt and allow them to drain for a few minutes. Turn over the slices onto dry paper towels. Allow them to drain 9 to 10 minutes.
Stir together black pepper, sour cream, and mayonnaise in a small bowl.
Remove the pie crust from the oven and line with sliced brie cheese.
Layer tomatoes on top of the cheese. Spread sour cream mixture on top of the tomatoes.
Next, top with pimento cheese and bacon.
Bake 30 minutes until lightly browned and cheese is melted.
Remove from oven and sprinkle green onion slices on top. Cool slightly. Serve warm.