Laura Pawel Dance Company returns to Chen Dance Center with the premiere of "Flickers," a company work to music by Barebones (Gene Caprioglio on guitar and Dr. 88 on harmonica), along with company favorites.   Laura Pawel founded her company in 1968, and the ensemble of longtime collaborators present choreographed works with improvisation in both the dance and music, along with improvised talk by the performers.   Dancers are Stacey Berkheimer, Jim Finney, Pamela Finney, Emily Kistler, Maki Kurokawa, Elaine Myrianthopoulos, and Pawel.  Live music for all dances by Barebones, Cecilia Coleman Quartet, and Phil Stone.