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