Mostly everything is just nuts and bolts, you'll be okay. If I can do it, you can too.

UNLESS you can access the assembly from the front bumper grills without removal, this is what I did

Start from the wheel well fenders. Remove (I believe 3) 10mm bolts from each fender liner. You do not need to remove them all.

Remove the 3-5 front bumper bolts

Remove 5-6 bottom front bumper bolts (these might be Phillips)

Start gently pulling and removing the front bumper starting from the sides. Make sure to have something to prop the bumper on. There is not enough slack on the electrical harness behind the bumper (Fog light and I assume park distance control) to reach the ground. I just used my tool box and it was sufficient.

From there it is a breeze, remove the fog light assembly, unplug electrical harness. Replace and put everything back.

I would replace both fog light assemblies at the same time. If you are like me, OCD will kick in, if you see that one fog light glass is brand new and the other is pitted. They are cheap enough to replace both at same time. The Hella one I bought even came with the bulbs included

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2004 BMW M3 Individual
2009 BMW E70 X5 35d
2011 BMW E70 X5 35d - Totaled
2009 BMW M3 E90 - SOLD
2006 E53 X5 4.8iS - SOLD
2002 E46 M3 Convertible - SOLD
2006 E46 M3 ZCP - SOLD
2011 E70 X5 35d - SOLD
2000 E39 ///M5 - SOLD
2003 E53 X5 4.6iS - SOLD
2006 E83 X3 3.0i MSport - SOLD
2000 E46 323Ci - SOLD