Pat your 4 chicken breasts dry with paper towels—this is the move that changes everything. Mix together the lemon zest, garlic, rosemary, thyme, salt, and pepper in a small bowl. Rub this mixture all over both sides of each chicken breast, pressing gently so it sticks. Let it sit for 5 minutes while your pan heats up.
Heat the olive oil in a large skillet over medium-high heat until you see it shimmer. Once the oil's hot and almost smoking, carefully lay the chicken breasts into the pan. Don't move them around—let them sit undisturbed for 6-7 minutes until you get that golden crust on the bottom.
Flip each chicken breast and sear the other side for another 5-6 minutes until it's golden brown. The internal temperature should hit 165°F when you check it with a meat thermometer in the thickest part. I learned the hard way that guessing gets you dry chicken, so grab that thermometer.
Pour the lemon juice and chicken broth into the pan around the chicken—not over it. Let everything simmer together for about 3-4 minutes, which lets those flavors meld without overcooking your protein. The broth should bubble gently and start getting a little syrupy.
Remove the pan from heat and stir in the butter until it melts into the sauce. This butter enriches everything and makes it taste way more restaurant-quality than it should. The fresh parsley goes in now—stir it through and taste for seasonings.
Let the lemon herb chicken breast rest in the pan for 2 minutes before serving. Resting sounds unnecessary but it actually keeps all those juices inside the meat instead of running all over your plate. My 6-year-old ate three helpings last Tuesday because the texture was so tender.
Spoon some of that lemon-butter sauce over each chicken breast when you plate it up. This sauce is honestly too good to waste, so make sure you drizzle it generously. Serve immediately while everything's still warm and the herbs are at their brightest.