Chipotle Mexican Grill opened its East Longmeadow restaurant at 42 Center Square in December. Erin Wolford, senior director of external communications at California-based Chipotle said the location has about 25 employees. The spot was the former Sleepy’s mattress shop. East Longmeadow approved a Five Guys Burgers & Fries for the location, but the plan fell through. The town approved Chipotle in July.