As other comments said, GPs routinely prescribe SSRIs. Moreover, it's not remotely cowboy to ensure continuity of care arising from exigent circumstances.
I didn't say it was "cowboy" which I put in quotes and you didn't, I simply said what I said, that insurers can put restrictions on doctors based on their specialties (true fact), that you (as a doctor) fear your insurer considering you to be a cowboy (also a true fact). Malpractice is something to worry about, including whoever educated you :) to look for the worst possible interpretation of what somebody says.