Place the chicken breasts on a cutting board and gently pound them to an even thickness for uniform cooking.
Pat the chicken dry thoroughly with paper towels; removing moisture helps achieve a crisp sear.
Mix together salt, pepper, and smoked paprika, then generously season all sides of the chicken breasts.
Heat a heavy skillet over medium-high heat until shimmering and hot, about 2 minutes.
Add the olive oil to the pan, swirling to coat the surface evenly.
Carefully lay the chicken breasts into the skillet away from you, listening for a sizzling sound.
Cook the chicken without moving for 5-6 minutes until the underside is deep golden brown and crusty.
Flip the chicken using tongs, then reduce the heat slightly to prevent burning, and cook for another 5-7 minutes until the internal temperature reaches 74°C (165°F).
Remove the chicken from the skillet and transfer to a cutting board; let rest for 5 minutes to redistribute juices.
Squeeze fresh lemon over the rested chicken and sprinkle with chopped herbs and minced garlic if using.
Slice the chicken against the grain, revealing a juicy interior with a crispy, golden crust, ready to serve.