Prep the chicken: If the breasts are thick, slice them horizontally to make cutlets or pound to an even 1/2–3/4 inch thickness. This helps them cook evenly and stay tender.
Make the marinade: In a bowl, whisk lemon zest, lemon juice, olive oil, garlic, thyme, parsley, rosemary, honey, Dijon, salt, pepper, and red pepper flakes.
Marinate: Add chicken to a zip-top bag or dish.
Pour in the marinade, coat well, and refrigerate for 30 minutes to 2 hours. Don’t exceed 4 hours or the acid can toughen the meat.
Choose your cooking method: Grill: Preheat to medium-high. Grill 4–5 minutes per side, until internal temp reaches 165°F.
Oven: Preheat to 425°F. Place on a lined sheet pan and roast 14–18 minutes, depending on thickness.
Skillet: Heat a little oil over medium-high.
Sear 4–6 minutes per side until cooked through.
Rest: Transfer to a plate and rest 5 minutes to lock in juices.
Finish and serve: Top with a squeeze of fresh lemon, a drizzle of olive oil, extra herbs, and lemon slices. Serve with spring sides like asparagus, peas, or a simple arugula salad.