I think you are really asking for a 90 day Non-O <- (no A after the O) visa based on being over 50 so you can get a year extension based on retirement once you're back.
You can get the Non-O visa issued IN country by meeting the proof of funds 800K baht in a thai bank account in your name only transferred in from abroad, (some immigration offices require those funds to be seasoned 2 months before you apply some don't)
You'd also need a minimum of between 15 and 21 days left on your current visa exempt or tourist visa entry stamp or an extension from one of those to apply
You apply at the immigration office pay your 2000baht, the application goes under review for 2 weeks or more, you go back get the Non-O visa and a new 90 day stamp inked in, then when you have 30 days or less left on your stamp you apply for the year extension for 1900baht. That's how it's done in country.
Now whether you can or can't get a 90 day Non-O visa in Penang is unknown, their website links to the requirements to get the O visa from KL. There is no appointment process at Penang it's a walk up consulate.
I would say you could try it OR get ahold of
@Jim **************
who pre-covid used to push a LOT of paper down at that consulate and see if it's still available and what the requirements are