Marinate frozen chicken in raspberry vinaigrette until chicken is thawed (if chicken's already thawed at least marinate for 1h)

Drain potatoes and arrange around chicken, drizzle remaining marinate over whole dish, place dish in oven for approximately 1h

You don't have to make the sauce, but it goes great for dipping the chicken and potatoes in (though they'll be tasty enough on their own so it's really optional). For the sauce blend all ingredients over high heat whisking constantly until smooth consistency and desired thickness. Drizzle over plate or serve in dip container on the side.