There seems to be anecdotal evidence that yes, you can:
https://thepointsguy.com/guide/prior...-portland-pdx/
That being said, I'd do this sooner rather than later!! PP has a history of cranking down on benefits like this when they're "over used", and since this restaurant perk would be a direct cost to them rather than a bulk lounge deal, I suspect that if too many people start doing this, that benefit will start getting charged through to your linked credit card beyond $28/day, as that benefit is "clarified"!