Preheat oven to 325° and butter a 9 inch pie pan. In a skillet, partially cook the bacon, drain on paper towels and set aside.
Sprinkle 1/2 cup of the bread crumbs evenly on the bottom of the pie pan. Arrange half of the tomato slices on the bread crumbs and top with half the chopped onion. Evenly scatter one half of the grated cheese over the onions and repeat the layers with the remaining tomatoes, onion and cheese. Pour the beaten eggs over the pie and season to taste. Top the pie with the remaining bread crumbs and arrange the partially cooked bacon over the crumbs. Bake the pie for 45 minutes, or until the bacon is crisp. 4-6 servings.