After all, I have a fire extinguisher, if I need it.
But where does one get a flame thrower like this?
HERE, for a picture of the bear.
UPDATE: Lots of suggestions coming in. Thanks for that. There’s one I need advice about. Very inexpensive. A super hot — Kodiac Bear grade — pepper spray. I’m thinking that bears are basically blind anyway. Their anger and momentum would have them kill you before they would decide that they don’t like the pepper spray. Wouldn’t it be like a tooting a vuvuzela while standing on the highway, just feet away, seconds away, from being run over by a tractor-trailor? Ineffective? Dunno. There certainly do seem to be many brands of super-hot pepper spray…
Accompany me, Father George David Byers, S.S.L., S.T.D., as I begin life as a Catholic Priest-Hermit by choice. Holy Souls Hermitage is dedicated to the sanctification of my fellow priests, bishops, deacons & seminarians going through the purgatory of this life or the next. Prayer and sacrifice go up, of course, for both Benedict XVI and the next Successor of Saint Peter. 
Oh man that’s funny! Got a good laugh out of the pic of the flame thrower. Better suggestion than that or a gun: get a big dog. Might have to train him to leave chickens alone, but a dog will run a bear off, and is agile enough to outmaneuver him.
Best suggestion yet. Of course, I would have to feed the dog!
Dogs LOVE eggs, and you’ve got plenty! Buy cheap dry food, then stir an egg yolk (not the white) into his food each day. You’ll have a healthy dog with a glossy coat that way.