Ingredient:

• 1 tablespoon olive oil, or as needed
• 1 skinless, boneless chicken breast half, cut into cubes
• 1 large sweet potato, peeled and cut into 1/2-inch pieces
• 1 tablespoon Irish whiskey
• 1 tablespoon minced fresh sage
• 1 pear - peeled, cored, and cut into 1/2-inch pieces
• ½ cup water
• 2 cups baby spinach
• ¼ cup chopped toasted hazelnuts
• salt and ground black pepper to taste