America's most-loved fast food joint is...

Chick-Fil-A chicken sandwich.
J.Reed | Flickr Commons

Chick-fil-A has received backlash over the years for its stance on issues like gay marriage, but the restaurant seems to have it all together when it comes to customer satisfaction.

The chicken chain ranked highest in the U.S. for customer satisfaction, according to the American Customer Satisfaction Index Restaurant Report 2015.

In its first appearance on the list, Chick-fil-A outpaced its peers with the highest level of customer satisfaction ever recorded by a fast food restaurant. (Tweet this.)

"We strive to provide a remarkable experience for each and every customer, so we are grateful and humbled that we were selected for this honor," Chick-Fil-A said in response to the survey.

Read More Fast food stocks have soared...but is it a bubble?

Chipotle Mexican Grill and Panera Bread, also newcomers to the list, ranked highly as well.

"As the economy improves, consumers with more disposable income—but squeezed for time—want higher-quality ingredients, freshness, and better service at a reasonable price," the report said.

"High scores for Chipotle and Panera Bread suggest that consumers think they're getting a reasonable value for money."

Read MoreBurger chain adds bugs to the menu...on purpose

Fast food burger chains slumped at the bottom of the list, with McDonald's, Burger King and Wendy's each seeing year-over-year declines in customer satisfaction. Representatives for McDonald's, Burger King and Wendy's did not respond to CNBC's request for comment.

ACSI attributed the aforementioned drop to intense competition in the burger sector and shifts in consumer preferences.

The decline comes as more consumers move toward fast-casual burger chains, including Five Guys, In-N-Out Burger and Shake Shack, which typically offers better ingredients, freshness and more developed decor, according to the report.