Freeze the pork shoulder for 15 Minutes to firm. Cut into slices as thinly as possible.
Add garlic cloves, 1/2 of onion, pineapple juice, vinegar, oregano, vegetable oil, chipotle peppers, adobo sauce, cumin, paprika, achiote paste, chili powder, and salt in a blender. Puree until smooth.
Add the pork shoulder slices to a large mixing bowl with the al pastor marinade. Toss to combine. Cover and refrigerate for at least 2 hours, or up to 24.
Air Fry in batches at 400°F / 205°C for 8-10 Minutes, or until the edges are brown and crispy. Repeat as necessary until all pork is fried, pouring out any leftover marinade juices between each batch. Set aside on a plate.
Air Fry the pineapple chunks at 400°F / 205°C for 8 Minutes, or until golden. Set aside.
Cut the pork into thin slices and set aside in a bowl.
To assemble, top corn tortillas with sliced pork, top with diced white onion, and season with fresh salsa, cilantro sprigs, and lime wedges.