Chipotle Has a Pork Problem

Chipotle Mexican Grill Inc. is still struggling to keep popular menu items from disappearing.

The Mexican-food chain stopped selling carnitas burritos at hundreds of its restaurants in January because it dropped one of its pork vendors, and it’s still not fully stocked again. The company also has run low on its premium supplies of beef and chicken over the past year, forcing it to offer alternatives at some locations. And social media is rife with posts from customers complaining that their local Chipotle is missing one item or another.