Kohl's identified Chawla and Chief Merchandising and Customer Officer Michelle Gass as potential candidates for the company's long-term CEO-succession planning. Chawla will oversee all store operations, including the company's logistics and supply chain network, its planning and operations and store construction and design. The executive is currently president of Walgreens' digital business and chief marketing officer and will work there until Nov. 25, a spokeswoman for that company said. Walgreens Boots Alliance Inc. runs the largest drugstore chain in the United States.