Create an automator (osascript had issues sending key commands from terminal) to run an applescript and save it (Here on my Desktop)

# open chrome
tell application "Google Chrome"
	open location "http://192.168.68.xxx:9330/display/"
	activate
end tell

delay 1

# set full screen
tell application "System Events"
	keystroke "f" using {command down, control down}
end tell


-- Click the “Screen Mirroring” menu bar item.
set timeoutSeconds to 2.0
set uiScript to "click menu bar item 6 of menu bar 1 of application process \"Control Center\""
my doWithTimeout(uiScript, timeoutSeconds)

-- Click the “Roku TV” checkbox.
delay 1
set timeoutSeconds to 2.0
set uiScript to "click checkbox 2 of scroll area 1 of group 1 of window \"Control Center\" of application process \"Control Center\""
my doWithTimeout(uiScript, timeoutSeconds)

on doWithTimeout(uiScript, timeoutSeconds)
	set endDate to (current date) + timeoutSeconds
	repeat
		try
			run script "tell application \"System Events\"
" & uiScript & "
end tell"
			exit repeat
		on error errorMessage
			if ((current date) > endDate) then
				error "Can not " & uiScript
			end if
		end try
	end repeat
end doWithTimeout

Next the TriggerCMD is just

automator /Path/To/File