Can I clean my oven light bulb? ?

If it still lights up, EASY OFF on the glass will work. I used that "Noxious" crap for YEARS. It will remove solidified grease.

Probably better off buying a new one rather than take the chance of breaking it. They are cheap. Any hardware store will have one. 

You didn't ask - but I'll add an easy way of cleaning the oven shelves. Spray them as you spray the oven. After the set time, remove them from the oven and put them in the laundry sink full of hot (as you can tolerate it) soapy water (the sink is big enough and high enough so you won't get a sore back) Get a barbecue wire bristle brush and scrub away. The wires bristles make the job so much easier - not only do they remove old grease etc, they 'polish' the shelves while you're at it!

Remove the bulb first--then spray with a degreasing cleaner, and GENTLY wipe it off. Then put it back into the socket. 

Depends how bad it is. They cost about 50p, so how much of your time is that worth.

You can clean it.  It unscrews like a regular light bulb.  Do that cold and wash off with dish soap and hot water. Grease washes off.   Dry it and screw back in. Done. Or you can go out and buy one...same wattage.

spray inside of oven with oven cleaner 

old glazers item,pumice,sometimes called 'rubbing compound',,Du Pont used to sell the stuff containing some petro chemical in a small can with the paintcan type lid,,green n white,have not seen the stuff in auto supply

neither the powder, metal polish might work,you could also get a new bulb

They don't cost more than a buck. It's easier to replace it.

The cleaner will have no effect on glass.