Place each chicken breast between two pieces of plastic wrap to prevent splatter.

Using a meat mallet or rolling pin, pound each breast to an even 1/2-inch thickness for uniform cooking.

Pour olive oil over the chicken and rub it in, then season evenly with salt and black pepper.

Preheat a grill or skillet over medium-high heat (about 400°F) until hot.

Cook the chicken for 4–5 minutes on the first side, then flip and cook for another 4–5 minutes for a total of 8–10 minutes, or until the internal temperature reaches 165°F.

During the last minute of cooking, drizzle lemon juice over the chicken.

Remove the chicken from heat and let it rest for 3–5 minutes before slicing to allow juices to redistribute.