The font used in the screenshot is DejaVu Sans Mono Nerd Font

Install on oh-my-zsh custom themes:

$ wget https://raw.githubusercontent.com/frontendmonster/oh-my-zsh-skill-theme/master/skill.zsh-theme -P $ZSH_CUSTOM/themes/

Set your $ZSH_THEME to skill in your ~/.zshrc

# ~/.zshrc
ZSH_THEME="skill"

Source zshrc to apply changes:

For icon support you should have nerd-fonts installed, and make sure it is the font used by your terminal.

Suggestions and improvements are welcomed!