The "pixels" are misleading. It isn't pixels of an image of a planet, it's pixels of the point spread function of the diffraction limited smear of the planet. I

The "pixels" are misleading. It isn't pixels of an image of a planet, it's pixels of the point spread function of the diffraction limited smear of the planet. Increasing the resolution of that image isn't going to result in being able to resolve the planet itself, it'll just show a smudgy smeary point of light in greater detail. In order to actually resolve the planet into real pixels we'll need much larger telescopes, likely outside of Earth's atmosphere. And we're a long way off from that.