Preheat oven to 375 degrees. In a skillet, cook bacon until crisp. Drain, cool and crumble into small pieces. Set aside.
Unroll crescent roll dough; sprinkle with flour and separate into rectangles. Arrange rectangles, flour side down, on bottom of a 15 x 10-inch baking pan, pressing to cover bottom and 1/2 inch up the sides. Seal seams. Bake 12 to 14 minutes, or until golden brown. Remove from oven and cool completely.
In a small bowl, combine mayonnaise, Dijon mustard, pepper blend and garlic. Spread mixture evenly over cooled crust. Sprinkle with cooked bacon, green onions and lettuce. Add tomato and cheese. Garnish with extra green onions, if desired.