Make biscuits. Preheat oven to 425°F. Whisk flour, baking powder, sugar, salt. Cut in cold butter to coarse-crumb texture. Stir in cold buttermilk just until shaggy. Pat to 1 inch, fold in thirds twice, cut 4 biscuits, place touching on parchment-lined sheet. Brush tops with buttermilk. Bake 14–16 min until tall and golden.
Cook bacon in air fryer at 380°F for 8–10 min, or skillet 7–9 min. Drain on wire rack.
Cook sausage patties in skillet over medium, 3 min per side.
Warm ham 30 seconds per side in same skillet.
Make folded eggs. Whisk each egg individually with salt/pepper. In nonstick skillet over medium-low with ½ tsp butter, pour in one egg, swirl, let set as thin omelet, fold in thirds into a square. Repeat for each.
Assemble in this order from bottom up: biscuit bottom → sausage patty → 2 bacon strips → 1 slice American cheese → folded egg → ham slice → 2nd slice American cheese → biscuit top.
Wrap and rest in parchment or foil 30 seconds to fully melt the cheese.
Serve immediately.