Season the chicken: Pat the chicken breasts dry with paper towels, then season both sides with salt, pepper, and Italian seasoning. Drying the chicken first helps it brown instead of steam.
Sear the chicken: Melt 2 tablespoons butter in a large skillet over medium-high heat. Sear the chicken for 5-6 minutes per side until deep golden brown and a crust forms.
Rest on a plate: Transfer the chicken to a plate and tent loosely with foil. It will finish cooking later in the sauce.
Bloom the garlic: Lower the heat to medium, melt the remaining butter, and add the minced garlic. Cook for about 30 seconds, stirring constantly, until fragrant but not browned.
Deglaze the pan: Pour in the chicken broth, lemon juice, and soy sauce, scraping up the browned bits from the bottom of the skillet with a wooden spoon.
Simmer the sauce: Let the sauce bubble gently for 3-4 minutes until it reduces slightly and coats the back of a spoon.
Return the chicken: Nestle the chicken back into the skillet, spooning sauce over the top. Simmer for 2-3 minutes until the internal temperature reaches 165°F.
Garnish and serve: Scatter fresh parsley over the chicken and serve immediately straight from the skillet with the sauce spooned on top.