Bring a large pot of water to a boil and salt it generously.
While the water heats, put the chickpeas and a little salt and pepper in a food mill or food processor. Process until the mixture is as smooth and fluffy as possible.
Transfer the puree to a large bowl (you should have about 2 cups / 480 ml).
Use a fork to stir the ricotta cheese and nutmeg into the chickpea puree.
Add 1/4 cup (960 ml) of the flour and stir until just combined.
Continue adding flour, a little at a time, until the mixture forms a soft dough you can handle, but just barely.
Turn the dough out onto a lightly floured surface and knead gently for a minute. To test for readiness, pinch off a small piece and drop it into the boiling water. If it holds its shape, the dough is perfect. If it disintegrates, knead in a bit more flour and test again.
Divide the dough into 3 or 4 pieces.
Roll one piece into a rope about 1/2-inch thick, then cut the rope into 1-inch lengths. For a traditional look, you can gently roll each piece over the tines of a fork to create ridges, but this is optional.
Place the finished gnocchi on a sheet of wax paper, making sure they do not touch.
Working in batches to avoid overcrowding the pot, add about half of the gnocchi to the boiling water and stir gently once.
After they rise to the surface, cook for another 20-30 seconds.
Remove the cooked gnocchi with a slotted spoon and serve immediately.
Toss with warm sauce or melted butter and enjoy!