Squirt a little StartingFluid into intake before next ColdStart; if starts on first try, could be a fuel pressure\filter\pump issue?
Center electrodes ate up on on one side is typical of EDIS, due to reversed ignition voltages, left compared to right bank.
I'll hook up my fuel pressure gauge here in a bit. The pump is relatively new, put in in late 2016. Fuel filter was last changed in 2019. Last time I checked, it had 62 psi. On the EDIS, I suspected that was the case. I'm aware of how it works. I tried those E3 plugs once, lasted less than 5000 miles and they were trashed. I put in some NGK iridium plugs once, lasted less than 5000 miles and the center electrodes were gone on both sides.
Interestingly, I put a small tube in the throttle body on the MAF side years ago to allow me to squirt starting fluid in. It's capped off when not being used. Back when I was having real difficulty getting it started. Would crank and crank, but no start. Hook jumper cables up and keep at it. Eventually it would start and run on like 3 cylinders. Then the rest would gradually kick in over about a five minute period. Then it ran great. Had to go through this every time I cold started it. Changed all the sensors, had over 70 psi fuel pressure, new plugs, coils and wires. Then one day, it just stopped doing it. Never figured out what caused it. But when I squirted starting fluid in, it would start, knock horribly (starting fluid is zero octane), burn off the fluid and quit.