your depression and no lifting are the biggest part of your atrophy.. sounds like you got a little chubby after you moped around for a while.. I recommend you just get into your diet and clean up the junk foods. keep hitting the gym and pushing through.. soon you will notice some signs that your getting back your shape. then use that motivation to further tune your diet and training to keep mass gain your number one priority. don't do a bunch of cardio and get lots of rest. I recommend a good protein and in your case some potassium nitrates and agmatine. these two will keep you pumped up and looking thicker longer.