Preheat oven to 350°.
Combine flour, sugar, baking powder, and salt together; then, thinly cut butter into the same bowl and use your hands to mix butter into the dry ingredients until it's incorporated.
In a separate bowl, combine egg, syrup, milk, melted butter, and vanilla, then pour wet ingredients into dry ingredients and stir to combine; set aside.
Cook 3 slices of bacon; set one aside, and break the other two up into tiny pieces and stir the bacon into the scone dough.
Flour a baking mat and then pour dough out onto the mat. Use your hands to form dough into a circular round, about 1/2" thick and 7"-8" circumference. Be careful not to roll it out too thin or the scones won't be the correct texture.
Use a knife to make 4 cuts, creating 8 scones. Move the scones onto a baking sheet, and bake the scones for about 20 minutes. Optional: brush a bit of melted butter onto the scones before baking.
While scones are baking, make the maple glaze: whisk syrup and powdered sugar with an electric mixer. Once scones are done, drizzle them with the maple glaze and top them with more cooked bacon.