Circle K offers a variety of popular snacks and treats, including $1 shots, BBQ chips, and bakery items. Customers enjoy cookies similar to those from Subway, muffins reminiscent of McDonald's, and sourdough donuts like those from HEB. However, some reviews mention issues with staff professionalism, particularly regarding employees arguing in front of customers and unhelpful gestures from cashiers. This behavior can create discomfort for customers who feel caught in the middle of such disputes. Overall, while Circle K has great food options, there are concerns about the customer service experience.