Pat chicken breasts dry with paper towels. If breasts are uneven in thickness, pound them to an even ¾-inch thickness for uniform cooking.
In a glass bowl, combine garlic-infused olive oil, lemon juice, lemon zest, rosemary, thyme, salt, and pepper. Whisk thoroughly to emulsify.
Place chicken breasts in a zip-top bag or shallow dish and pour marinade over them. Ensure each breast is thoroughly coated. Refrigerate for 30 minutes to 2 hours.
Remove chicken from refrigerator 20 minutes before cooking to promote even cooking.
Heat a heavy-bottomed skillet over medium-high heat until very hot but not smoking.
Add chicken breasts to the hot skillet, discarding excess marinade. Cook undisturbed for 5-7 minutes until a golden-brown crust forms.
Turn chicken breasts and cook for an additional 5-7 minutes until internal temperature reaches precisely 165°F (74°C) at the thickest part.
Transfer chicken to a clean cutting board and tent loosely with aluminum foil. Rest for exactly 5 minutes to redistribute juices.
Sprinkle with green onion tops and fresh parsley before serving.