Yes bacon lardons can be cooked in the oven just like you would cook the regular bacon.
Bacon Lardons which is also called bacon lardoon or larding are small stripd or cube of fatty pork fat or bacon.
So there's no problem with cooking the bacon lardon in the oven just like you would cook other bacon.
I cook bacon lardons in the oven all the time along with cooking my bacon.
It takes around 16 to 20 minutes to cook the bacon and bacon lardons in the oven.
You can cook it a bit longer if you want too depending on how well done you want the bacon and bacon lardons but 16 to 20 minutes is usually more than long enough.