In a mixing bowl, combine fresh cranberries, olive oil, coconut aminos, maple syrup, minced garlic cloves, fresh rosemary leaves, and dry white grape juice to create the marinade.
Place chicken thighs into a large resealable bag or shallow dish, pour the marinade over them, seal or cover, and let marinate in the refrigerator for at least 30 minutes.
Preheat your oven to 375°F (190°C).
In an oven-safe skillet over medium-high heat, add olive oil. Remove chicken from the marinade and place it skin-side down in the skillet. Sear until golden brown.
Pour any reserved marinade over the chicken along with additional cranberries and sprigs of rosemary. Bake for about 45 minutes or until the internal temperature reaches at least 165°F (75°C).
Let the chicken rest for a few minutes before serving. Plate alongside roasted veggies or rice, drizzle with pan juices, and serve.