If you're still taking requests, here's an idea:
Dragoness runs a pyramid scheme where she gets kobolds to peddle useless, but pretty-looking crystals as "alternate medicine", and, as per pyramid schemes go, she gets a slash of the funds. But kobolds are dumb and trade the crystals (as well as getting new hires) for food, with each kobold up the pyramid getting fatter and slobbier, with the dragoness on top reaching immobility with severe gastrointestinal issues.
When the pyramid begins to collapse, the greedy low-rung kobolds one level above the newest hries just eat their unfortunate underlings, growing fatter and unhealthier in the process, only for THEIR bosses to do the same. Thus, the pyramid implodes, with each "level" becoming fatter, slobbier and unhealthier from eating the one bellow it, until it finally reaches the dragoness, who's own greed makes her eat the now immobile and barely alive lardball "top" kobolds, thinking she's made of tougher stuff...
...She isn't. The sudden influx of grease and fat overtaxes her entire body all at once, causing her to literally explode like a lard-filled balloon, despite her ruined GI track doing its best to vent pressure on either ends.