Yes, too small. You know those cages they keep commercial laying hens in? This would be similar. Please reconsider.
We have kept a house chicken, two separate times. The first was a norwegian jaerhon. We used a double decker cage from Critter Nation. Worked out great, easy to clean, small chicken, lots of time outside. The second was just last year. We had a dark brahma hen and our coop wasn’t finished. I built a small pen in our foyer. We live where we get 7 months of winter, several feet of snow and weeks of temperatures below -20. There was no place else to keep her. She did very well as an only chicken, although not ideal for her. We have cats and dogs that she interacted with, plus two humans. However… very dusty, always cleaning, allergies, and the cecal poops are not fun.
It can be done, but it’s really not healthy for the bird or you, there are a good handful of illnesses that you can acquire from chickens, and sleeping in the same room could make you very very sick.
Hope this helps.