The band was formed in East Haven, Connecticut in 1998 with the original lineup consisting of guitarist Tim Palmieri, bassist Ron Spears, drummer Adrian Tramontano, and keyboardist Jordan Giangreco. They decided on their first name, Psychedelic Breakfast, based on the suggestion of Tramontano's cousin. It is a reference to the Pink Floyd song "Alan's Psychedelic Breakfast", from their album Atom Heart Mother. The band then began playing shows in Northeast and released their first album, Psychedelic Breakfast, in the summer of 1999. Four songs from that album were featured on the MTV series Undressed.
The band released their second studio album, Deuce, in the summer of 2001, followed by their only live album, Bona Fide, in the winter of 2003, a time during which they began supplementing their Northeast shows with the occasional national tour.
The band then won a Jammy Award for being "New Groove of the Year" in 2004 and shortly thereafter decided to change its name to The Breakfast. Also around this time, Relix Magazine printed an article about the band.
In the summer of 2005, The Breakfast released their third studio album, Real Radio, and embarked on a national tour that saw them open for popular bands such as The Wailers, moe., North Mississippi Allstars, and Gomez.
The Breakfast then released their fourth studio album, Moxie Epoxy, in the spring of 2006.
On July 7, 2006, shortly after The Breakfast had played its 1,000th show, Giangreco played his final show with the band at Beardslee Castle in Little Falls, NY. Palmieri, Spears, and Tramontano then continued on as a trio for the next 13 months with Palmieri handling keyboard duties in addition to guitar.
On August 12, 2007, Matt Oestreicher played his first show as The Breakfast's new keyboardist at Gathering of the Vibes in Bridgeport, CT.
On Dec. 31, 2007, Spears played his final show as The Breakfast's bassist at Electric Company in Utica, N.Y. At Spears's second-to-last show two nights prior at Toad's Place in New Haven, CT, Giangreco joined The Breakfast for four songs to close the performance, including a stellar version of one of the band's most highly regarded songs, Mooboo's Voodoo (Episode 2), and then a cover of Emerson, Lake & Palmer's "Karn Evil 9", with Spears on lead vocals. A 'Thank You' video montage featuring Spears, the other members of the band, and their friends was also shown.
On Jan 11, 2008, Chris DeAngelis played his first show as The Breakfast's new bassist at Sully's in Hartford, CT. DeAngelis, a Connecticut native, has played with Vermont's Turkey Bouillon Mafia and shared the stage with members of P-Funk, Eric Kalb (Deep Banana Blackout), Dave Grippo (Trey Anastasio Band), Fred Hersch, Chris Parker, and others.