I eat this at least once a week.
Charred exterior edges contrast with a tender, pale interior carrying bright citrus notes and piney herbal aromatics. Acidic citrus juice denatures surface proteins rapidly. Limit the soak to 15 minutes. Extended acid exposure turns lean poultry mealy before cooking begins. Extra virgin olive oil carries fat-soluble flavor compounds from the fresh rosemary and minced garlic directly onto the meat surfaces.
Preheat the grill on high heat to establish immediate sear marks upon contact. Lower the flame immediately after placing the butterflied breasts on the grates. Cook for two minutes on the initial side. Flip and cook for three minutes. Turn once more and finish until internal temperatures reach 165 degrees Fahrenheit. Butterflying ensures even thickness across each portion, preventing overcooking on thinner edges while thicker centers finish.
Replace fresh lemon juice with lime juice at a 1:1 ratio if needed. Swap olive oil for avocado oil when higher smoke points are required for intense direct flames. Scale the marinade linearly when cooking for larger groups. Maintain the 1/8 cup oil to 1/8 cup citrus ratio per single chicken breast equivalent. Store leftover cooked poultry in an airtight container in the refrigerator for up to three days.