That's her on the top left the white chicken and those are the other girls I have eggs from that she is setting on and that's the rooster.
No matter what size, really, the less interference the better. Should you decide to candle all the eggs be sure to wash your hands. So much of the stuff we use every day can affect a developing embryo. If the hen is calm when you look at the nest, so much the better. One of my silkies likes being given treats while sitting on the nest. And she's not the least bit protective of eggs and chicks as far as I am concerned. Her sister is just the opposite; strictly hands off. Last weekend I tried to catch one of her two week old chicks and I ended up catching nothing but having a scratched and bloody hand for my trouble. It is very important that the eggs, hen, and nest be left untouched while the eggs hatch. Tame hen or not, it doesn't matter. Eggs smash easy when they are hatching. A egg that has the shell smashed in often does not hatch. The best way to avoid this is by using a hands off policy.