I think the real question would have to be: can God violate his own nature? Of course God can violate laws that He created, because HIm creating them implies that He has power over them, to create and destroy them.
So as to the nature question, can a rock choose not to roll down a hill if pushed? Can we choose to be infinite because it sounds good? LIkewise, if it is part of God’s innate nature, just as He is innately infinite and transcendent to be the ultimate good, then He would not violate that goodness anymore than a rock could be imagined to choose to fly.
What do you mean by the term “his own laws?” Are you referring to the laws he has established for men? Natural law? Something else? Regarding the first two, those laws simply do not apply to God.
For example - the commandment “Thou shalt not kill” applies to men, but not to God. God is the author of life and He can certainly take away that privilege from any of His creations without breaking any law.
Another example - Miracles are by their very definition a violation of the laws of nature. God is not subject to nature, so He can perform miracles that are outside of natural law.
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