The food coma is from Night of the Living Deadpool (2014).
Synopsis for #1:
Deadpool awakes from a food coma to find…THE ZOMBIE APOCALYPSE HAS OCCURRED! Can the Merc with the Mouth avoid becoming the Merc in their Mouths? Writer of the DEADPOOL KILLOGY Cullen Bunn brings us to one of Deadpool's darkest tales ever…and not just because it's in black & white (and red)!
The zombies turning into Deadpool is his eventual solution in #4, and is explored further in the follow up series Return of the Living Deadpool (2015).
Synopsis for #1:
Last year, Cullen Bunn brought us NIGHT OF THE LIVING DEADPOOL, the hit tale of the Merc with the Mouth trapped in the zombie apocalypse. In the end, our hero found a "cure" of sorts to this horrible outbreak-any zombie that ate Deadpool transformed...into another Deadpool. And they lived happily ever after? Not so fast, as Cullen Bunn returns, joined by the amazing artwork of Nicole Virella, to let us know that wandering hordes of Deadpools might just be worse than flesh-hungry walking corpses.