Aww! What a cute little guy!
I agree... he is more than likely someone's pet that somehow escaped... or they let him go, as we all know this happens. We do not have wild beardie's here in FL or any other state for that matter. Posting flyers in your neighborhood would be a great idea. These little guys can definitely wiggle their way into our hearts, so I can understand you falling in love with him. However, there may be a broken hearted person out there that lost their beloved beardie.
He looks really good for a lost beardie. Maybe a bit wrinkly in the bottom pic, but otherwise healthy looking.
Is he eating okay for you? What are you feeding him? Do you have a UVB and heat for him?
Have you bathed him for
hydration?