[MY15.50i]

2015 X5 50i with 46K miles on board, original spark plugs and coils. Car started jerking when past 3K rpm/changing speeds. Got home and fired ista and discovered engine misfire on cylinder 5.
I pulled the spark plug on cylinder 5 and noticed what can be seen in the attached pictured, doesn't look right to me. Why so dry?

The gap was pretty much non existent so I gapped it at 032, cleared codes and turned car over, gave it a few revs past 3K rpm and all was good, but didn't drive it yet.

When I changed spark plugs on my other x6 50i I did not see the spark plugs being dry at all.
I also went ahead and unplugged the spark plug from cylinder 6 and it was as dry, but gap was ok-ish.

Could this be the injectors? Wonder if no fuel is being sprayed onto the reason for the spark plug being so dry, or maybe it dried up from the heat...