01 - Combine lemon juice, lemon zest, 3 tablespoons olive oil, minced garlic, honey, Dijon mustard, thyme, salt, and black pepper in a medium bowl and whisk until well blended.
02 - Place chicken breasts in a shallow dish or resealable bag. Pour half the marinade over chicken, turning to coat evenly. Reserve remaining marinade. Let marinate at room temperature for 15 minutes or refrigerate up to 2 hours.
03 - Heat 1 tablespoon olive oil in a large skillet over medium-high heat. Remove chicken from marinade and discard the used marinade. Cook chicken 5 to 6 minutes per side until golden and internal temperature reaches 165°F. Transfer to a plate and cover loosely with foil.
04 - Add reserved marinade and chicken broth to the skillet. Bring to a simmer, scraping up browned bits, and cook 3 to 4 minutes until sauce reduces slightly.
05 - Return chicken to skillet, spoon sauce over top, and simmer for 2 minutes to warm through.
06 - Plate chicken and garnish with chopped parsley and optional lemon slices before serving.