Prepare the Chicken: Start by placing the chicken breasts between two sheets of plastic wrap. Using a meat mallet or rolling pin, gently pound the chicken to an even thickness of about 1/2 inch. This ensures even cooking and tender meat.
Dredge the Chicken: In a shallow dish, combine the flour, garlic powder, onion powder, and a generous pinch of salt and pepper. Mix well. Take each chicken breast and dredge it in the flour mixture, ensuring it is fully coated. Shake off any excess flour and set the chicken aside on a plate.
Cook the Chicken: In a large, heavy skillet, heat 2 tablespoons of olive oil over medium-high heat. Once the oil is shimmering and hot, carefully add the chicken breasts to the skillet. Cook for about 5-6 minutes on each side, or until they are golden brown and cooked through (internal temperature should reach 165°F/75°C). Remove the chicken from the skillet and transfer it to a plate, covering it lightly with foil to keep warm.
Sauté the Mushrooms: In the same skillet, add the remaining 2 tablespoons of olive oil. Once heated, add the sliced mushrooms. Sauté the mushrooms for about 4-5 minutes, stirring occasionally, until they are beautifully browned and tender, absorbing all the delicious flavors in the pan.
Create the Sauce: Pour in the chicken broth, balsamic vinegar, and soy sauce into the skillet with the mushrooms. Stir gently to combine and scrape any browned bits from the bottom of the pan. Bring the mixture to a gentle simmer and allow it to reduce slightly for about 3-4 minutes, concentrating the flavors.
Combine Chicken and Sauce: Return the cooked chicken breasts to the skillet, ensuring they are submerged in the sauce. Let them simmer in the sauce for an additional 2-3 minutes, allowing the flavors to meld. Finish by stirring in the butter until it melts and the sauce thickens slightly, creating a luscious consistency.
Serve: Remove the skillet from the heat and sprinkle fresh chopped parsley over the dish just before serving for a pop of color and flavor.
Notes
Serve with creamy mashed potatoes or sautéed green beans for a complete meal.