01 - Whisk together olive oil, lemon juice, lemon zest, minced garlic, Dijon mustard, honey, dried oregano, salt, and black pepper in a bowl.
02 - Place chicken breasts in a shallow dish and pour half of the marinade over them, ensuring they are evenly coated. Reserve the remaining marinade. Allow to marinate for a minimum of 10 minutes, up to 1 hour for enhanced flavor.
03 - Heat 1 tablespoon butter in a large skillet over medium-high heat. Remove chicken from marinade and discard used marinade. Cook chicken breasts for 5 to 6 minutes per side until golden brown and internal temperature reaches 165°F. Transfer to a plate and tent with foil to rest.
04 - Add reserved marinade and chicken broth to the skillet. Bring to a simmer, scraping browned bits from the bottom. Simmer for 3 to 4 minutes until the sauce slightly reduces.
05 - Whisk in remaining tablespoon of butter to enrich the sauce. Return chicken to the skillet, spoon sauce over the pieces, and simmer gently for 1 minute to reheat.
06 - Plate chicken breasts, spooning sauce over the top. Garnish with chopped parsley and lemon slices for a fresh finish.