Gently pat your chicken breasts completely dry with a paper towel; this helps them sear perfectly.
Carefully slice each chicken breast horizontally through its center, creating two thinner cutlets from each.
Season both sides generously with onion powder, garlic powder, dried oregano, sea salt, and black pepper.
Evenly sprinkle the fresh lemon zest over both sides of the seasoned chicken.
Warm a cast iron skillet over medium-high heat, then add your chosen healthy oil.
Place the chicken breasts in the hot skillet and sear for about 5 minutes on each side until they are beautifully golden and fully cooked through. Reduce heat if browning too quickly.
Transfer the cooked chicken from the skillet to a plate and let it rest for 5 minutes. For extra tenderness and flavor, top with a thin slice of butter or a drizzle of olive oil, and finish with a squeeze of fresh lemon juice.