The lizards in that experiment underwent physical changes to their digestive systems based on the food available in the islands. Which is conclusive with predictions that the separation would cause unique changes due to natural selection. This whole "same kinds" argument is a flawed one. A "kind" isnt a scientific classification at all. You say kinds don't change, yet kind is a made up term. I can make "kind" mean whatever I want. It could mean mammals, vertebrates, all warm blooded organisms, a specific species, etc. So if I said land mammals evolved to whales, and you say no because the kind changed, I can say the kind stayed the same because whales are still vertebrate, warm blooded, mammals. In that link it notes several observed speciation events, so unless you want to argue that evolution says birds turn into fish and undermine any credibility you have at all, your argument is false. Your argument that since you have an unknown, and God can fill that unkown, it must be God, is literally God of the gaps.