One month old pullet is hobbling around
Sorry your having trouble.
Can you post photos or a video?
Encourage her to eat her chick starter and provide some poultry vitamins in her water B vitamins are helpful sometimes, make sure it has B2-Riboflavin.
Any swelling of the legs/feet? Any swelling of the hocks?
Any other symptoms - coughing, sneezing, wheezing, runny nose/eyes?