The pandemic caused justified rapid increases in food prices due to supply chain constraints. Once the supply chains stabilized, not only did the prices not return to normal, corporations continued to increase prices along the post-pandemic escalated inflation rate.
The last President to use an Executive Order to control grocery prices was Nixon, and it was a horrible mistake. Not only did it cause supply chain issues, as soon as the Order expired the prices increased well past the standard inflation rate.
What they are doing could be considered criminal profiteering, and should be prosecuted by the Department of Justice.