sure you can. first you have to create new page template. to do that copy everything inside your index.php then create a new php file and name it any name you prefer then paste every you just copied. insert this code above your new php file:
<?php /* Template Name: ANY NAME YOU PREFER
*/ ?>
save it.
then go to your dashboard>>pages>>add new>>your page’s name in your case it’s about
at the right side under the attribute there is a dropdown list label PARENT choose your template name then save it.
going back to your new php file you can now edit your page!