Pat the chicken breasts dry with paper towels and season both sides with salt and pepper.
In a large skillet over medium-high heat, add 2 tablespoons of olive oil. Once hot, add the chicken breasts and cook for 6-7 minutes on one side, until golden brown. Flip the chicken and cook for another 5-6 minutes or until cooked through and juices run clear (internal temperature should reach 165°F/75°C). Remove chicken from the skillet and set aside.
In the same skillet, lower the heat to medium and add ½ cup of the butter. Allow it to melt, scraping up any browned bits from the bottom of the skillet. Add the minced garlic and cook for about 30 seconds until fragrant.
Stir in the lemon zest, lemon juice, and thyme. Allow the sauce to simmer for 1-2 minutes to thicken slightly. Taste and adjust seasoning with more salt and pepper, if desired.
Return the cooked chicken breasts to the skillet, spooning the sauce over each piece to coat well. Let them simmer in the sauce for an additional minute to absorb the flavors.
Remove from heat. Plate the chicken, drizzling more lemon butter sauce over the top, and sprinkle with fresh parsley for garnish.
Notes
Serve with lemon wedges and fresh herbs for garnish.