01 - Pat the chicken breasts dry with paper towels. Season both sides generously with salt, black pepper, ground cumin, and dried 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 to 3 minutes per side until golden brown. Remove chicken from skillet and set aside on a plate.
03 - In the same skillet, add the sliced onion and cook for 2 to 3 minutes until softened and translucent. Add the minced garlic and sliced jalapeño (if using), sautéing for 1 minute until fragrant.
04 - Pour the salsa verde and lime juice into the skillet, stirring to combine with the aromatics. Bring the mixture to a gentle simmer, scraping up any browned bits from the bottom of the pan.
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 to 18 minutes until the chicken is cooked through (internal temperature reaches 165°F).
06 - Remove the skillet from heat and let the chicken rest in the sauce for 2 to 3 minutes. Transfer chicken to serving plates, spoon sauce generously over the top, and garnish with chopped cilantro, crumbled queso fresco, and fresh lime wedges.