Preheat oven to 350 degrees Fahrenheit and line a 9×13-inch baking dish with parchment paper.

Prepare the herb oil: In a food processor, combine avocado oil, garlic, parsley, lemon juice, salt, and pepper. Set aside.

Pat the fish dry. Squeeze lemon juice over it and season with salt and pepper.

In a pan, heat two tablespoons of the prepared herb oil and pan fry sea bass and lemon slices, cooking the fish for two to three minutes per side.

Place fish in the prepared baking dish and brush lightly with the prepared herb oil. Top with seared lemons.

Cover and bake 25 minutes.