Actually this is supposed to be the prequel. But seeing as the other two have been finished for years now I recommend you go ahead and play them until this gets completed which is going to be a long time.
I think this is a prequel, so it's fine to play first? But also, then you'll probanly notice a drop in quality if you go back to LoQO1 afterwards.
Someone answered this already, but Origin, despite the misleading name, is NOT a prequel. The game's main story takes place chronologically after the events of LoQO 1 and then LoQO 2. The first one largely doesn't matter though, as nothing really important happens in it.
Completely different protagonist each game. The ones from 1 and 2 don't make an appearance and their fate is largely unknown. They are canon though.
Events from LoQO 2 are directly referenced a couple of times in Origin. LoQO 2 also started some plots in motion right at its end/epilogue that were deliberately unfinished, and Origin is still supposed to tie them up. So far, outside of the references, it hasn't even started doing that.
As for "quality", all the games are made in RPGMaker XP (engine from 2005 that the dev stubbornly refuses to move on from), using mostly its generic graphical/audio assets. The core gameplay/combat is about as generic turn-based RPG as it gets. You stack stats/buffs and spam your strongest attack in every fight. Incredibly boring grind in every game.
Origin has its own original soundtrack and utilizes way more scripting than the previous games though. Take all that as you will.