Prepare your buttermilk biscuits following the recipe.
Slice your pork tenderloin into about 12 slices, 1 1/2 inches thick. Heat olive oil in a large skillet over medium heat. Place tenderloin slices in skillet and cook for about 3 minutes on each side. Remove to a plate and let rest for about 3 minutes.
Split open a biscuit and place one to two slices of pork tenderloin inside. Top with slices of cheddar cheese and top half of biscuit. Press lightly.
Allow to sit for a bit to allow the cheese to melt slightly. If it does not, place assembled biscuits onto sheet pan and back into the oven for about 2 minutes to warm and allow the cheese to melt.