Using a large pan set over medium heat, add the bacon to the pan and saute for 4-5 minutes or until crispy. Set the bacon aside, leaving the fat in the pan. Add the sliced onions to the pan. Saute on low for 10 minutes, stirring every few minutes. Lightly salt at the 10-minute mark and continue to cook for another 10-15 minutes, stirring every few minutes, until the onions are soft and caramelized. Add the bacon back to the pan and toss with the onions. Set aside.

Using a box grater, grate the apple finely. Pat dry to remove excess liquid.

Toss the apple with the ground chicken, coconut flour, sage, thyme, garlic powder and salt and pepper. Stir to combine. Form the chicken into 4-5 burgers.

Grill the burgers on the grill surface (using extra avocado oil if frying in a pan) for about 5 minutes on each side, or until the internal temperature reaches 165 F.

Top with the burgers with the bacon caramelized onions, and drizzle with balsamic glaze and serve with butter lettuce, or a burger bun that you tolerate!