Heat olive oil in a large skillet over medium heat.
Season chicken breasts with garlic powder, onion powder, salt, and pepper.
Add chicken to the skillet and cook until browned on both sides, about 5-7 minutes per side.
Remove chicken from the skillet and set aside.
In the same skillet, add chicken broth and bring to a simmer.
Stir in heavy cream and pepperoncini peppers, mixing well.
Return chicken to the skillet and simmer for an additional 10 minutes, or until chicken is cooked through.
Garnish with fresh parsley before serving.