Cut the chicken breasts in half, width by width. Place the chicken between two pieces of plastic wrap, and pound with a meat mallet until it is ¼-inch thick or less.
Season the chicken to taste with salt and pepper.
Add flour or cornstarch to a shallow dish. Coat the chicken with the flour or cornstarch, pressing it down to adhere, and then shake off the excess.
Cook the chicken:
Cook the chicken: heat olive oil in a large skillet over medium-high heat. Add the chicken to the skillet, trying not to overcrowd it. Cook the chicken for 3-4 minutes on one side. Flip the chicken and cook for 1-2 minutes.
Remove the chicken from the skillet and make the sauce. Drain excess fat from the skillet, leaving a thin coating on the skillet.
Prepare the sauce:
Add all the ingredients: add garlic to the skillet. Cook until fragrant.
Pour in the chicken stock and stir, scraping any browned bits.
Simmer the sauce for 8 minutes.
Add lemon juice and capers and simmer for another 5 minutes. Add butter and allow it to melt. Swirl the pan around to make it faster.
Assemble the dish:
Add the chicken to the skillet and coat it with sauce and capers. You can garnish it with some chopped parsley.
Serve chicken warm, drizzled with sauce.
Notes
For a GF version, use cornstarch or GF flour.
For this recipe, you can also use chicken tenders.
For extra flavor, add 2 tablespoons of parmesan to your flour. Combine it and use it to coat the chicken.
For extra lemon flavor, add a few lemon slices to the chicken or some extra lemon rind.