I just split my cucumbers and squash open and toss them to the chickens. You can do the same with pumpkins. They clean out the seeds, guts and flesh, leaving nothing but the skin. They have a gizzard, so they can grind up the seeds themselves.
Speaking of homeopathic, cucurbits are natural wormers. The seeds contain a substance that causes worms to loosen their grip on the intestinal walls. The flesh loosens their bowels a bit, making it easier to flush out the worms. This does not kill the worms or even get rid of all the worms inside the chicken. It reduces the worm load the chicken is carrying. I think pumpkin is the best, but the others have some benefit too.
Obviously, it is best of they don't have any worms, but it is pretty normal in nature for birds and animals to have some worms. They can manage a light worm load without a big problem. It's when the worm numbers get built up that it starts to really sap the animals energy.
My view almost precisely. The benefit of making a slurry out of the guts alone, however, is to provide a concentrated "short", especially for the younger birds, that may avoid the seeds because of their size. Older birds? As you say, not problem.