No. That is not normal. Looks like you do have a head gasket issue. Here is a guide that will help prove that out:
https://www.2carpros.com/articles/head-gasket-blown-test
You will want to test the head gasket after the engine is warm.
As for the plugs it looks like a couple of issues. They appear to be overheated and have oil fouling. This is not uncommon for a head gasket issue.
If the head gasket is blown then after you repair it, you would want to run a compression check not only to test the new gasket but make sure you didn't develop another issue as well. Clearly when the head is off you want to put a straight edge on it and make sure it is not warped.
Let us know what questions you have and we can go from there.
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Sunday, November 15th, 2020 AT 9:37 AM