I start by pounding the chicken breasts to an even thickness so they cook evenly. Then I season both sides with salt and pepper. This step makes a big difference in texture and taste.
I heat olive oil in a large skillet over medium heat and add the chicken. Each side cooks for about 5–6 minutes until golden brown. Once done, I remove the chicken and set it aside.
In the same skillet, I melt butter and add the sliced mushrooms. I let them cook until they release their moisture and turn golden. This step adds deep, savory flavor to the dish.
I stir in the minced garlic and Italian seasoning, cooking just until fragrant. Garlic burns quickly, so I keep a close eye on it here.
Next, I pour in the chicken broth and heavy cream, stirring gently. The sauce simmers for a few minutes until slightly thickened. This is where everything starts to smell amazing.
I lower the heat and stir in Parmesan cheese until it melts smoothly into the sauce. The sauce becomes rich and velvety at this point.
I place the chicken back into the skillet, spooning sauce over each piece. Then I sprinkle mozzarella cheese on top and cover the skillet briefly until the cheese melts.
Once the cheese is melted and bubbly, I turn off the heat. A sprinkle of fresh parsley adds color and freshness before serving.