How? By incubating 10 eggs with his own body heat.
He will live inside a glass vivarium until his charges hatch, watched by visitors to the Palais de Tokyo museum in Paris.
Poincheval expects the process to last between 21 and 26 days.
"I will, broadly speaking, become a chicken," he said.
The artist, 44, began the performance - titled "Oeuf" (Egg) - on Wednesday.
Rather than sitting on the eggs directly, he is deploying a chair with a container under its seat.