Daily handling is too much (go ahead, all of you who think snakes are puppy dogs and can be taught to sit up and roll over,and tell me about your daily cuddle sessions) if for no other reason than you need to give them at least 48 hours to digest their food after a feeding. I try to handle once a week, just to keep them use to it. Truth of the matter is, however, they would just as soon you never touch them. That does not relieve one of the responsibility of keeping the snake fed properly and providing a clean environment of the correct temperature and humidity.
As far as the snake being "skinny" that's a relative term. Corns are as a species are slender snakes. If you can post a photo, folks here will be quick to tell you if your snake looks too thin. Most of us here endorse feeding according to the "Munson Plan". I have a simple guide. Under 12 months of age, feed snakes 20 percent of their body weight every five days. Feed yearlings, two year olds, and breeding females 15 percent of their body weight once a week. Feed adults over two years old ten percent of their body weight every two weeks. This is just a guide, one can feed adults more and adjust if they start to get fat.