There could be several reasons why your lechon kawali isn't crispy. One of the most common culprits is overcooking. When you cook the pork too long, it renders out all of its fat and makes it tough, not crispy. Other causes can include using too much oil or not draining away excess fat after cooking, both of which can cause the pork to become soggy instead of crunchy.  Lastly, you may need to adjust your cooking temperature – some recipes call for a higher heat or longer cooking time than others in order to achieve that perfect crispiness. With a little trial and error, you should be able to get your lechon kawali just right! Happy eating!