Bravo’s Emmy-winning reality series ‘‘Top Chef,’’ which has spent most of its 19th season in Houston, moves to Tucson for the final two episodes. Featured guests will include Carlotta Flores of legendary El Charro Cafe, Don Guerra of Barrio Bread, and Maria Mazon of Boca Tacos y Tequila. The first episode, ‘‘Cactus Makes Perfect,’’ airs Thursday but was filmed last November at the JW Marriott Tucson Starr Pass Resort & Spa. The finale, which airs June 2, took place at Tanque Verde Resort. Show times are 8 p.m. on most TV providers.