In Izola you get the best in good inns too, if you have a full wallet.
We were at pizzeria Gušt - Izola, where they have stone-baked pizzas from quality fresh ingredients, price ca. 9.5 eur accordingly.
Otherwise the best pizzeria on our coast is in Žusterna by the main coastal road on the left, opposite the known grill on the right, direction Koper - Izola. We had some hazy sun warming a little from 12 to 14h, by evening at 11h the deck froze with difficult movement, that's when we finished daily work.
Coast impressions I'll summarize later.