01 - Preheat oven to 375°F (190°C). Line a baking dish with parchment paper or lightly grease.
02 - Heat 1 tablespoon olive oil in a skillet over medium heat. Sauté garlic and spinach until spinach is wilted, about 2 minutes. Remove from heat.
03 - In a bowl, combine sautéed spinach, softened cream cheese, crumbled feta cheese, and chopped cranberries. Season with 1/4 teaspoon sea salt and 1/4 teaspoon black pepper. Mix until evenly distributed.
04 - With a sharp knife, carefully cut a pocket into the thick side of each chicken breast, taking care not to cut through the other side.
05 - Evenly spoon the spinach and cranberry filling into each chicken breast pocket. Secure with toothpicks if necessary.
06 - In a small bowl, mix paprika, dried thyme, 1/2 teaspoon salt, and 1/4 teaspoon black pepper. Brush the stuffed chicken breasts with 1 tablespoon olive oil, then sprinkle the seasoning mixture evenly on all sides.
07 - Place the stuffed and seasoned chicken breasts in the prepared baking dish.
08 - Bake in the preheated oven for 25 to 30 minutes, or until the chicken is cooked through and juices run clear. Internal temperature should reach 165°F (74°C).
09 - Remove toothpicks and let the chicken rest for 5 minutes before serving.