A previous campaign Davidson did in the fall helped "drive consumer buzz" for breakfast, CEO David Gibbs said during a fourth-quarter earnings call in February.

The changes: a softer bun, more melted cheese, white onions on the patties and more Big Mac sauce.

The company announced an all-electric restaurant design that uses 100% renewable energy via certified renewable credits.

Wendy's breakfast promo includes a Bacon or Sausage, Egg and Swiss Croissant with a small side of seasoned potatoes at the discounted price of $3.