The same data and evidence for geology and the Earths formation can also be used to back up the Expanding Earth theory. It is just how you look at it and what theory you use.
Below is a quote from livescience.com about Pangaea facts (not theory).
More than a century ago, the scientist Alfred Wegener proposed the notion of an ancient supercontinent, which he named Pangaea (sometimes spelled Pangea), after putting together several lines of evidence.
The first and most obvious was that the "continents fit together like a tongue and groove," something that was quite noticeable on any accurate map, Murphy said. Another telltale hint that Earth's continents were all one land mass comes from the geologic record. Coal deposits found in Pennsylvania have a similar composition to those spanning across Poland, Great Britain and Germany from the same time period. That indicates that North America and Europe must have once been a single landmass. And the orientation of magnetic minerals in geologic sediments reveals how Earth's magnetic poles migrated over geologic time, Murphy said.
In the fossil record, identical plants, such as the extinct seed fern Glossopteris, are found on now widely disparate continents. And mountain chains that now lie on different continents, such as the Appalachians in the United States and the Atlas Mountains in Morocco, were all part of the Central Pangaea Mountains, formed through the collision of the supercontinents Gondwana and Laurussia.
Pangaea formed through a gradual process spanning a few hundred million years. Beginning about 480 million years ago, a continent called Laurentia, which includes parts of North America, merged with several other micro-continents to form Euramerica. Euramerica eventually collided with Gondwana, another supercontinent that included Africa, Australia, South America and the Indian subcontinent.
About 200 million years ago, the supercontinent began to break up. Gondwana (what is now Africa, South America, Antarctica, India and Australia) first split from Laurasia (Eurasia and North America). Then about 150 million years ago, Gondwana broke up. India peeled off from Antarctica, and Africa and South America rifted, according to a 1970 article in the Journal of Geophysical Research. Around 60 million years ago, North America split off from Eurasia.
Facts About Pangaea, Ancient Supercontinent
Pangaea breakup theory or Expanding Earth Pangea theory?
Geology is constantly surprised by what it finds, especially when making its initial predictions, which is the important bit. Anyone can modify a theory to now fit the facts but a good science theory predicts. And those now modified theories always seem to have to be modified again ...
Geology is not a fact, it is a theory. Always remember that. Always add "theory" to whatever fact or statement they are saying as though it was (and it is to them) Gospel.
So why not an Expanding Earth Pangea theory instead of a Pangaea breakup theory?