If you are not careful, landing all over will not be the only thing they do...all over
I notice when I fill the bird feeder with sunflowers seeds the Chickadees are real tame. A few moments ago I put a few seeds in my hand and rested my hand on the edge of the feeder. Within 5 minutes I had Chickadees sitting on my hand twice and several times they took see from my hand. I think with a little more exposure to me they would be treating me like a tree and landing all over.