Prep the chicken fast. If you don’t have thin-cut breasts, slice regular breasts in half horizontally to make cutlets.
Pat dry with paper towels so they sear instead of steam.
Season generously. In a small bowl, mix salt, pepper, smoked paprika, garlic powder, onion powder, and red pepper flakes. Sprinkle evenly on both sides of the chicken and press it in.
Preheat the pan. Set a large skillet (cast iron or stainless works best) over medium-high heat. Add 1 tablespoon olive oil and let it shimmer.
Sear in batches. Add chicken in a single layer without crowding.
Cook 2–3 minutes per side until deeply golden and just cooked through. Internal temp should hit 165°F (74°C). Transfer to a plate and tent loosely with foil.
Repeat with remaining chicken, adding more oil if needed.
Build a quick pan sauce. Lower heat to medium. Add butter and remaining 1 tablespoon olive oil to the skillet. Stir in the minced garlic and cook 20–30 seconds until fragrant, scraping up browned bits.
Deglaze and brighten. Pour in chicken broth and simmer 1–2 minutes until slightly reduced.
Stir in lemon juice. Taste and adjust with a pinch of salt if needed.
Finish and serve. Return chicken and any juices to the pan. Spoon sauce over to coat and warm through for 30–60 seconds.
Sprinkle with parsley and serve with extra lemon.