Combine the Dijon mustard, sweetener, garlic and seasoning in a bowl, set aside.
On a cutting board lay out 6 strips of thin cut bacon, gently stretch the bacon, this will help prevent it from shrinking a ton while cooking.
Rub the dijon mixture all over the pork tenderloin and lay it on the row of bacon (see pictures).
Gently roll the bacon over the pork tenderloin. Do not wrap it too tightly, leave some slack for the meat to exand as it cooks. If needed secure a few toothpicks in the pork tenderloin. Place the pork seam side down on a roasting rack.
Bake 35-40 minutes or until the pork tenderloin reaches an internal temperature of 145 degrees F. Allow the pork to rest on the roasting rack for 10 minutes before slicing.
Note: if you feel the bacon is cooking too quickly loosely cover with foil. However, this has not been an issue for me.
Notes
Use Brown Sugar Monkfruit or Swerve if keto. If not, use regular brown sugar or coconut sugar.
For a different flavor combo you can swap the Dijon mustard for spicy brown.