01 - Heat olive oil in a large skillet over medium heat. Add chopped onion and jalapeño, sauté for 2 to 3 minutes until softened.
02 - Incorporate minced garlic and cook for 30 seconds until fragrant.
03 - Add ground beef to the skillet, breaking it up with a spoon. Cook for 5 to 7 minutes until browned and fully cooked.
04 - Stir in chili powder, cumin, smoked paprika, cayenne, oregano, salt, and black pepper. Mix thoroughly and cook for 1 minute.
05 - Incorporate diced tomatoes and cook for an additional 2 to 3 minutes until slightly softened. Adjust seasoning to taste.
06 - Heat tortillas in a dry pan or microwave until pliable and warm.
07 - Divide beef mixture evenly among tortillas. Top with shredded lettuce, cheese, avocado slices, and a dollop of sour cream. Garnish with chopped cilantro and squeeze lime over the top.
08 - Serve immediately accompanied by extra lime wedges.