Zach Bryan's impulsive split from Brianna Chickenfry allegedly stemmed from his ongoing mental health struggles and grief over his mother's death which caused him to spiral into self-sabotage, according to insiders. Earlier this week, the country star, 28, 'blindsided' Barstool Sports' favorite Brianna, 25, when he announced on Instagram that he had called it quits in the wake of an 'incredibly hard year personally.' An insider revealed that Zach has been struggling to cope with the 'emotional rollercoaster' he has been on since his mother Annette died in 2016, struggling to maintain relationships as Bryan is still trying to 'figure himself out.' #zachbryan #briannachickenfry #showbiz #celebritynews #barstoolsports