01 - Season the chicken with salt and pepper on both sides.
02 - Heat olive oil in a large skillet over medium-high heat. Add chicken and sear for 2-3 minutes per side until golden. Remove and set aside.
03 - In the same skillet, add diced onion and jalapeño. Sauté for 2 minutes until softened. Add garlic and cook for 30 seconds.
04 - Stir in salsa verde, cumin, oregano, and lime juice. Bring to a simmer.
05 - Return chicken to the skillet. Reduce heat to low, cover, and simmer for 15-18 minutes until chicken is cooked through and tender.
06 - Remove chicken and shred using two forks. Return shredded chicken to the sauce; stir well to coat and simmer for 2 more minutes.
07 - Serve chicken in warm tortillas. Top with cilantro, red onion, avocado slices, and a squeeze of lime.