Source: Nataliee Gamez on Twitter.
I originally thought this was a plane, because of the configuration of lights. The "triangle" shape seemed just to be reflections.
But then I noticed when it emerged from behind the tree, all the lights except the brightest (and possibly some barely visible) all just fade in, in front of the tree.
Now, the object seems clearly to be behind the tree, based of the light in the air, so that means that all these lights are reflections of the bright light on the right.
That's strange, but also puzzing is that earlier, on the other side of the tree, there's only one bright light visible.
I'd geolocated it to the circled region of Cedar Park )later confirmed by Nataliee), and thought it was possibly a plane coming in to land at the fly-in community of Hank Sassar at Breakaway.
But it's a bit confusing. What's going on with the reflections?
UPDATE (2023-01-09): As suggested by @flarkey, and now confirmed by the Cedar Park Police Department, this appears to have been a police drone.
The reflections seem to come from the window, which is likely triple paned. Possibly also from a lens protector. Similar reflections are seen in the lights of the police car. Looking In the other direction the reflections go the other way. Notice the second reflection of the light on the right is green (likely due to window coating)