Dropped the ball a bit so I'm getting to this later than expected. I won't go through a list of options like with our previous starter, but I'd like to highlight just a few that haven't been mentioned:
For much of the same reasons as Strong Jaw or Tough Claws (which I both like) there's also Sheer Force or Iron First. Fire and Electric share a lot of similarities in their movepools, so it's no surprise there is a rich vein to mine. Other abilities like Rock Head or Punk Rock feel a bit trite.
I also like the idea of Stakeout or Analytic as laid out by guingil. Another ability that could serve a similar purpose is Download. Especially if we lean into...
Pivoting. With access to STAB Volt Switch and a means to punish the Ground types that may stop it, numerous resists, readied access to two disrupting status conditions, and a natural inclination to wear boots, this Pokemon is shaping up as a potentially strong pivot. There a quite a few abilities that could further lean into this role, namely Regenerator and Intimidate.
Edit: It was brought to my attention that Iron Fist is a strictly worse Tough Claws, so disregard that suggestion