Install Nerd Fonts directly from the downloaded ZIP files

Install-NerdFonts.ps1

<#
.SYNOPSIS
    Install the 'Regular' fonts in Nerdfonts ZIP files

.DESCRIPTION
    Extract NerdFont Zip files into a temporary directory and install the fonts
    the fonts matching '-Regular' while filtering out the '-Mono' and '-Propo'
    variants.

.EXAMPLE
    Install-Nerdfonts.ps1 FiraCode.zip, LiberationMono.zip

.EXAMPLE
    Get-Childitem -Path .\NerdFonts -Filter '*.zip' | Install-Nerdfonts.ps1
#>
[CmdletBinding()]
param (
    [Parameter(Mandatory, ValueFromPipeline)][ValidateNotNullOrEmpty()]
    [string[]]$FontZip
)

begin {
    $Fonts = (New-Object -ComObject Shell.Application).Namespace(20)
    $TempFolderPath = [IO.Path]::GetTempPath() + "Nerdfonts"

    if (Test-Path -PathType Container $TempFolderPath) {
        Remove-Item -Path $TempFolderPath -Force -Recurse
    }
    New-Item -ItemType Directory $TempFolderPath
}

process {
    $FontFolder = $TempFolderPath + '\' + (Get-Item $FontZip).BaseName

    New-Item -ItemType Directory $FontFolder
    Expand-Archive "${FontZip}" -DestinationPath $FontFolder -Force
    Get-ChildItem -Recurse $FontFolder | Where-Object {
        $_.Name -like '*-Regular.[ot]tf' -and
        $_.Name -notlike '*Propo-*' -and
        $_.Name -notlike '*Mono-*.*'
    } | ForEach-Object {
        $Fonts.CopyHere($_.FullName, 16)
    }
}

end {
    Remove-Item -Path $TempFolderPath -Force -Recurse
}