Gather all your ingredients, including chopped parsley. Season the chicken breasts with salt, pepper, and Italian seasoning.

Warm olive oil in a large skillet over medium heat. Once hot, add the seasoned chicken and cook until golden brown and cooked through, about 6-7 minutes per side.

Add minced garlic to the skillet, letting it become fragrant, then pour in chicken broth and let it simmer for 5 minutes.

Whisk together cornstarch and cold water until smooth, then stir this mixture into the skillet to thicken the sauce.

Drizzle lemon juice over the chicken, then sprinkle with grated Parmesan cheese and let melt slightly before serving.