Indeed. You said earlier it had new chain and sprockets. If it's bottom/left side of engine, someone has cocked up putting it together.
Did they actually put the engine sprocket on properly? Have they put the cover on properly?
Might be a simple fix
Oh yes, here is your issue very, very common issue with Fazers. Even if the chain is adjusted too tightly they knock slightly, if the stealer has buggered up the rivet link (again very common) it will do the same as the chain being too to tight. Also check the rear is aligned correctly, another big area for mistakes.
Check the chain and the link, while the bikes on the centre stand, a correctly fitted and adjusted new chain/sprockets it should be almost silent. If you can hear or feel a rumble/knock even a very slight one, it's either, got out of line rear sprocket adjustment and/or the front hasn't been changed (another big stealer con trick) or fitted correctly, even loose I kid you not. Find the joining link, move it to the centre of the free travel below the swingarm, the link should move freely either end and return back straight. If it remains kinked even slightly it's too tight and must be replaced. To check the rear sprocket alignment, measure from the centre of the rear axle to the end of the swingarm, where the aluminium joins the cast rear adjuster. It should be within 1mm, better spot on.
Providing the bike was fine going in, it will be something the stealer has or has not done correctly, your bike is not scrap. If you find the chain is the issue, change your stealer and let others know who they're so they too can avoid them.
Good luck, let us know how you get on.