Trim and discard root end from lettuce; separate leaves . Rinse the lettuce and and dry them thoroughly. Set aside
Heat olive oil in a large pan over medium-high heat. Add onion and green pepper and sauté for a few minutes. Then push the veggies to the outside of the pan and put the ground pork in the middle. Add the salt and cook, breaking up meat into pieces, until pork is lightly browned and onion is slightly softened, 4-5 minutes.
Add the paprika, chili powder, garlic powder, onion powder, cumin and oregano. Cook, stirring to coat the spices on the pork and veggies. Add 2 tbsp water and cook, stirring occasionally, until pork is fully cooked, about 2 minutes more.
Meanwhile, in a small bowl, combine sour cream, lime zest, and juice from 1-2 lime wedges. Season with a pinch of salt.
Divide lettuce leaves between plates and fill with pork filling. Sprinkle with shredded cheese and drizzle with lime crema. Serve with lime wedges on the side.