It is more steamed than baked. All of the moisture is intact which leads to a lot juicier piece of meat. I recommend the GoSun portable unit that is ~$100 to explore cooking with the sun.
Also it looks like they are searing the outside in a way by using the clear dishes over an opaque material that is directly absorbing the infrared heat.
Also it looks like they are searing the outside in a way by using the clear dishes over an opaque material that is directly absorbing the infrared heat.