Preheat oven to 450° F. Lightly butter a baking sheet or line it with parchment paper.

Sift the flour, baking powder and salt together. Place in either a medium bowl or the work bowl of a food processor fitted with a steel blade. Cut the butter into the flour so that it is completely incorporated, using two knives, a pastry blender, or your hands, or process until incorporated. Beat 2 of the raw eggs and the cream together and add to the dry ingredients. Mix or process just to incorporate the eggs into the flour and butter; do not overmix. If using the processor, transfer to a bowl. Fold the cheese, scrambled eggs, and bacon into the flour mixture. It will be sticky and chunky. Stir and knead the dough as little as possible while distributing the cheese, scrambled eggs, and bacon throughout.

Transfer the dough to a well-floured work surface. Pat the dough into a rectangle about 12 x 4 x 3/4 inch high. Cut the dough into three 4-inch squares. Cut the squares on the diagonal to form triangles.

Place the scones at least 1 inch apart on the baking sheet. Beat the remaining 1 egg with 2 tablespoons water and use this wash to brush the top of the scones.

Bake for 10 to 12 minutes, or until golden brown. Remove and serve warm.