Preheat your oven to 375°F and line a small baking dish with parchment paper.
In a large mixing bowl, combine the ground beef, egg, almond flour, finely diced yellow onion, minced garlic, sea salt, black pepper, and dried oregano.
Mix the ingredients gently by hand until just combined, ensuring you do not overwork the meat to maintain a tender texture.
Shape the mixture into a compact loaf and place it into the prepared baking dish.
Lay the bacon slices over the top of the loaf, tucking the ends underneath the meat.
In a small bowl, whisk together the tomato paste, apple cider vinegar, and coconut aminos to create the tangy glaze.
Brush half of the glaze evenly over the bacon-wrapped loaf.
Bake for 35 to 40 minutes, brushing with the remaining glaze halfway through, until the internal temperature reaches 160°F.
Allow the meatloaf to rest for 5 minutes before slicing to keep it juicy.