1.Combine lime juice, paprika, chilli powder and garlic in a shallow ceramic dish. Add pork and toss to coat. Cover and chill for 15 minutes (longer if time permits).
2.Meanwhile, to make the avocado & black bean smash, place avocado, garlic and lime juice in a bowl. Roughly mash using a fork. Stir through black beans and coriander. Season with salt and pepper to taste and set aside.
3.Preheat a greased char-grill pan on medium heat. Drain pork. Char-grill pork in batches, turning occasionally, for 3-4 minutes until just cooked through. Transfer pork to a plate, cover and rest for 5 minutes.
4.Spray tortillas with oil on both sides. Char-grill tortillas, one at a time, over medium-high heat, until light golden and crisp.
5.Dividing ingredients, top each tortilla with ranch slaw or coleslaw mix, pork, avocado & black bean smash, tomatoes and sour cream. Serve with coriander, sliced jalapeno chilli and lime wedges.