As the academic and professional honor society of counseling, Chi Sigma Iota (CSI) has been recognized in developing advocacy, leadership, and professional identity in student and professional members. A qualitative, grounded theory study was conducted to investigate experiences of 15 early career counselors who were CSI chapter leaders as graduate students. An emergent theory of CSI chapter leadership and professional identity development in early career counselors is presented. Implications are discussed for counselor educators, CSI leaders, and counseling students and professionals, with suggestions made for future research.