The Better Chicken Commitment (BCC) provides a five-part standard to improve the welfare of chickens raised for meat by 2024. As of June 2020, about 180 food businesses have agreed to this commitment as a result of efforts by animal advocates. While these commitments are a valuable step toward improved animal welfare, it is important to also measure their actual implementation and the resulting supply of chicken products meeting these higher welfare standards. We review potential approaches for measuring the supply of BCC-compliant chickens and available data for making such measurements. We find that relatively little data is currently available in the US and that efforts by industry and government agencies may be necessary to collect such data.