We spent a long weekend in Ojai about a year ago, the places we tried were:
Azu - very good mediteranian style tapas. Their potatoes with aioli were worth making a special trip off 101 just for those.
Sea Fresh - casual and reasonable, but very solid seafood.
Feast Bistro - Only had a burger and salad for lunch, both were solid.
Bocali's - Casual family-oriented place, very noisy, picnic tables outside, not great food, but OK for what it is (red-sauce/red-checked tablecloth kind of place).
Oak Pit BBQ - Not the best BBQ in the world, but acceptable and reasonable.
Here's a pointer to Ojai restaurants: