Creamy Lemon Jalapeño Noodles

Name: Creamy Lemon Jalapeño Noodles
Ingredients: 18 to 24 ounces fresh or frozen udon noodles, such as Sanukiya or Kame; 3 to 4 medium lemons; 1 medium jalapeño pepper; 2 cloves garlic; 3 tablespoons packed light brown sugar; 2 tablespoons olive oil, divided; 1 tablespoon soy sauce; 1 teaspoon kosher salt; 2 tablespoons Kewpie mayonnaise; 2 tablespoons furikake seasoning, divided