Peel the plantain and slice into 1/4-inch thick rounds.
Heat the avocado oil in a large cast-iron skillet over medium heat.
Add the plantain slices to the skillet and cook for 3-4 minutes per side until they are golden brown and caramelized.
Remove the plantains from the skillet and set them aside on a plate.
In the same skillet, add the ground beef, breaking it apart with a wooden spoon or spatula.
Season the beef with the garlic powder, onion powder, smoked paprika, and black pepper.
Add the diced red bell peppers to the skillet and sauté with the beef until the meat is fully browned and peppers are tender.
Stir in the chopped kale and apple cider vinegar, cooking for 2 minutes until the kale is wilted and bright green.
Fold the caramelized plantains back into the skillet and toss gently to combine and warm through.
Transfer the mixture to a bowl and serve immediately while hot.