Preheat your oven to 400 degrees Fahrenheit and line a small baking sheet with parchment paper.
In a small mixing bowl, combine the Greek yogurt, flour, baking powder, and sea salt until a thick dough forms.
Shape the dough into a round, thick biscuit and bake for 12 to 15 minutes until the top is golden brown.
While the biscuit bakes, mix the ground turkey with dried sage, garlic powder, and black pepper in a separate bowl.
Form the turkey into a wide, flat patty and sear in a skillet over medium heat with avocado oil until fully cooked through.
Whisk the whole egg and egg whites together, then cook in the same skillet to form a thin, folded egg square.
Slice the warm biscuit in half, then layer the turkey patty, folded egg, and cheddar cheese on the bottom half.
Place the top of the biscuit on the cheese and allow the residual heat to melt it slightly before serving.