Preheat your oven to 375 degrees.
Season both sides of the chicken breasts with Italian blend seasoning, salt, and pepper.
In a large oven-safe skillet over medium-high heat, melt two tablespoons of butter along with two tablespoons of olive oil. Add the seasoned chicken breasts and sear for about 4–5 minutes on each side until golden brown.
Add halved baby potatoes around the chicken in the skillet and toss gently to coat them in any remaining oil and butter.
In a small bowl, mix together minced garlic, chicken broth, Dijon mustard, heavy cream, salt, and cracked black pepper until smooth. Pour this mixture over the chicken and potatoes in the skillet.
Transfer your skillet to the preheated oven and bake for about 20 minutes or until the chicken reaches an internal temperature of 165 degrees Fahrenheit.
Once done baking, let it rest for a few minutes before serving.