Chaka dan shugaban Mongol Nogai Khan ne ta wata mata mai suna Alaka.Wani lokaci bayan 1285 Chaka ya auri 'yar George Terter I na Bulgaria , mai suna Elena.A ƙarshen 1290s, Chaka ya goyi bayan mahaifinsa Nogai a yaƙi da halaltaccen khan na Golden Horde Toqta, amma Toqta ya yi nasara kuma ya ci nasara kuma ya kashe Nogai a 1299.A daidai wannan lokaci Chaka ya jagoranci magoya bayansa zuwa Bulgaria, ya tsoratar da gwamnatin Ivan II don gudun hijira daga babban birnin kasar, kuma ya nada kansa a matsayin mai mulki a Tărnovo a 1299. Ba a da tabbacin ko ya yi sarauta a matsayin Sarkin Bulgaria ko kuma ya yi aiki a matsayin mai mulki. shugaban surukinsa Theodore Svetoslav.An yarda da shi a matsayin mai mulkin Bulgaria ta tarihin tarihin Bulgaria.Chaka bai daɗe da jin daɗin sabon matsayinsa na mulki ba, yayin da sojojin Toqta suka bi shi zuwa Bulgeriya suka yi wa Tărnovo kawanya.Theodore Svetoslav, wanda ya taka rawa wajen taimakawa Chaka kwace mulki, ya shirya wani makircin da aka tuhume Chaka kuma aka shake shi a gidan yari a shekara ta 1300.