Slow-Roast Gochujang Chicken

Ingredients

• 1 3½–4-lb. whole chicken
• 1 tbsp. diamond crystal or 1¾ tsp. morton kosher salt, plus more
• freshly ground black pepper
• 5 tbsp. gochujang (korean hot pepper paste)
• ¼ cup plus 2 tbsp. extra-virgin olive oil
• 2 heads of garlic
• 1 ½" piece fresh ginger
• 1½ lb. baby yukon gold potatoes (about 1½" in diameter)
• 5 scallions
• 2 limes