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The are several failure modes where a timing chain can jump off a sprocket. When this happens, the engines self destructs. Replacing the chain tensioners is the probably the least labor intensive. I'm guessing replacing the IMS bearing is next followed by the variocam rails and lastly the chain tensioner paddles. IIRC, one must split the case to replace these latter items.
What is important at this point is to figure out which, if any, of the items mentioned above may be wearing out. My guess is you've read about inspecting the oil filter for metal and other debris. Others would describe better than me how to get a low cost look at the other items.
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