You can customise many things about the Divi menu within the WordPress Dashboard under [Appearance] [Customise] [Header & Navigation] but one thing you cannot adjust is the spacing between the menu items, this can be a problem if your menu consists of many items or long words and phrases. Luckily this is easy to fix with a little CSS.
Add the following to [Appearance] [Customise][Additional CSS] adjusting the padding-right figure as needed.
/* reduce space between menu items */
#top-menu li {
padding-right: 15px;
}
