New York (CNN Business) Nearly 20% of Chipotle's sales came from digital orders last quarter, and now it's redesigning some of its stores to reflect the growing trend.

The chain is revamping six of its American restaurants by adding walk-up windows and digital pick-up portals for online orders. The new restraurants will place a larger emphasis on the Chipotlane concept, which lets customers order online and pick up their food through a drive-thru lane. It's also creating unobstructed views of the kitchen to show how the food is made.

Chipotle CMG GrubHub GRUB said in a statement Thursday that the idea is to "help reduce friction and increase convenience for customers and delivery drivers alike." It has beefing up its delivery options through partnerships with DoorDash, Postmates and

The interior of a redesigned Chipotle.

Under CEO Brian Niccol, Chipotle has been emphasizing its digital capabilities. He previously told CNN Business that he thinks digital orders could make up half of the chain's sales.

Chipotle's "digital transformation" is about "giving people more access and driving even further into this idea of a frictionless experience," Niccol said. The company plans to continue leaning into tech, he added, noting that the "Chipotlanes" will likely "be a significant piece of our business."

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