It’s called Blue Plate Special by Jeff Lee Johnson. It happens to be hanging in my bathroom at this moment. It’s even better as a print. You can order it on deviantart.
Spoilers (look away!):
Skull in coffee
Bloody handprint near blind dude
Eyeballs on blind dudes plate
Tentacles on the floor everywhere
Mother grabbing son with a tentacle
Waitress cutting something bloody up
And I think a dude in the background has a fucked up face
So it's a restaurant Cthulhu and his ilk. Doesn't mean something is wrong it's just not your average dinner. This could be a completely normal day there, you don't know.
Skull in coffee
Bloody handprint near blind dude
Eyeballs on blind dudes plate
Tentacles on the floor everywhere
Mother grabbing son with a tentacle
Waitress cutting something bloody up
And I think a dude in the background has a fucked up face
Also, what does the writing on the journal say?
Also the ant lacquered table