Chick-fil-A's colors, a combination of red, black, and white, reflect the brand's simple, sincere, and powerful visual identity.
As you can tell from its name, this brand is known for its simple yet satisfying, and even healthy chicken menus.
You might wonder why a company so focused on chicken uses so much red, but I think the colors match the brand's language. Even if they don't match the color of the chicken... If they were orange, they would clash too much with Popeyes' colors, so I believe the color choices are spot on.