Using a custom font is fancy, and can even be useful too.

Using JetBrains Mono Inside VSCode

JetBrains Mono can be downloaded from the JetBrains Site Here

The information below assumes that you have downloaded the font, unzipped it and added to the macOS Font

macOS settings.json file location

On macOS the settings.json file is located here:

 $HOME/Library/Application Support/Code/User/settings.json 

Contents of Settings File

Here is a snippet from my settings.json file, commented for reference.

 { // Set the font "editor.fontFamily": "'JetBrains Mono', Consolas,
monospace", // Turn on font ligatures "editor.fontLigatures": true }