Prepare the brine by dissolving 2 tablespoons kosher salt in 1 quart cold water. Submerge chicken breasts fully and refrigerate for exactly 30 minutes.
Remove chicken from brine and pat thoroughly dry with paper towels. Using a meat mallet, gently pound the thicker end of each breast to create uniform 3/4-inch thickness throughout.
Combine garlic powder, dried thyme, smoked paprika, and black pepper in a small bowl. Sprinkle evenly on both sides of each chicken breast, pressing gently to adhere.
Heat a heavy-bottomed skillet over medium-high heat until it reaches 375°F (190°C).
Using a silicone brush, apply a thin layer of olive oil to each chicken breast (approximately 1/4 teaspoon per breast).
Place chicken breasts in the preheated skillet and cook undisturbed for exactly 5-6 minutes. Flip once and continue cooking for 5-6 minutes until the internal temperature reaches precisely 165°F (74°C) at the thickest point.
Transfer chicken to a cutting board and rest for 5 minutes to allow protein strands to relax and reabsorb juices.
Just before serving, sprinkle with fresh lemon juice and chopped herbs to provide brightness and aromatic complexity without additional calories.