I have a ripper by my front door, but am not happy with the spot at all, as it just keeps drying out (doesn't everything

It was originally planted in a small raised bed on top of very hard clay, but the roots keep exposing, and I am uncertain if they have actually made it through the clay or not. There is an obvious twisted root ball that begins to show fairly often. Do chilli's have a big tap root? Or is mainly just the root ball I need to worry about?
I can't remember its name, but it produces the big red long chillis about an inch and a half across, that some folks also eat green (apparently?)
It is at least 6 foot and lives on tap water, because if rain should happen to grace us with its presence, it seems to miss this spot. Would i be dicing with it too much if I tried relocating it into a tyre?