What to do about electrical outlets when using zillege tiles?

Hey all — I’m putting up handmade Zellige tiles for my kitchen backsplash, and since they’re uneven and not perfectly flat, my outlets and switches don’t sit flush anymore.

What’s the best way to handle this? Do you use spacers or outlet extenders? I’ve also seen tile electrical outlets that you would install similar to the rest of the tile. I want it to look clean and not have the outlets wobble or stick out awkwardly.

Any tips or photos of how you handled this would be awesome — especially if you’ve dealt with thick or uneven tiles like Zellige.