Akor opened scoring for the home team in the 13th minute.
Midfielder Khalil Fayad doubled the advantage on 63 minutes.
Akor added the third 18 minutes from time.
The 23-year-old has now scored seven goals in nine league appearances for Michel Dar Zakarians side this season.
The former Flying Eagles striker is the second top scorer in the French top-flight in the current campaign behind Kylian Mbappe.
Montpellier currently occupy 10th position on the table with 11 points from nine games.
They will face holders Paris Saint-Germain in their next league game.
Copyright 2023 Completesports.com All rights reserved. The information contained in Completesports.com may not be published, broadcast, rewritten, or redistributed without the prior written authority of Completesports.com.