01 - Pat the chicken breasts dry with paper towels. Season both sides generously with salt, pepper, cumin, and oregano, pressing the spices into the meat to adhere.
02 - Heat olive oil in a large skillet over medium-high heat until shimmering. Add the seasoned chicken breasts and sear for 2–3 minutes per side until golden brown. Remove chicken from the skillet and set aside on a plate.
03 - In the same skillet, add the sliced onion and cook for 2–3 minutes until softened and translucent. Add the minced garlic and sliced jalapeño (if using), sautéing for 1 minute until fragrant.
04 - Pour in the salsa verde and lime juice, stirring to combine with the aromatics. Bring the mixture to a gentle simmer, scraping up any browned bits from the bottom of the skillet.
05 - Return the chicken breasts to the skillet, nestling them into the sauce. Reduce heat to medium-low, cover with a lid, and simmer for 15–18 minutes, or until the chicken reaches an internal temperature of 165°F and is cooked through.
06 - Remove the skillet from heat and let the chicken rest in the sauce for 2–3 minutes. Transfer to serving plates, spooning sauce generously over each piece. Garnish with fresh cilantro, crumbled queso fresco, and lime wedges.