Oil leak

[eighteenninetytwo]

Has been leaking a bit for a while but yesterday I was late for something and driving at about 60 so the oil pressure got up there, followed by the oil getting OUT there and smoke in the cabin from burning from landing on hot engine.

leak is apparently from the timing belt cover (I had it check a while back but haven't got round to it but it does need to be done. Is replacing this gasket something that a layman (myself) can do on with the truck on stands with hand tools, or is this a "head to the garage and pay the hourly rate" job??