Season 1½ pounds boneless skinless chicken breasts with 1 teaspoon Italian seasoning, ½ teaspoon salt,and ¼ teaspoon black pepper.
In a large skillet, add 2 tablespoons olive oil and heat over medium-high heat. Add the seasoned chicken and cook for 7-8 minutes per side until cooked through and no longer pink. Remove the chicken from the pan and set it aside on a plate.
Returning to the skillet, add 1 tablespoon olive oil, 1 medium sliced red bell pepper, and ⅓ cup diced yellow onion. Cook for 3-5 minutes until tender.
Whisk in ¾ cup low-sodium chicken broth and ½ cup sliced pepperoncini peppers. Cook until the broth is reduced by half, about 2 minutes.
Stir in 1 cup heavy cream and ½ cup grated Parmesan cheese and bring to a simmer. Season with salt and pepper to taste, if needed. Cook until the sauce starts to slightly thicken, about 2 minutes.
Return the chicken to the pan. Add the pepperoncini and toss to coat in the sauce. Serve over rice, mashed potatoes, or cooked noodles.
Notes
Storing and Reheating Leftovers
In the Refrigerator: Store cooled leftovers in an airtight container for 3-4 days.
To Reheat: Reheat in the microwave for 1-2 minutes, or until warmed through.