I am driving up from Nerja on the coast for a visit to the Alhambra for the day.

We are parking in the Alhambra car park.

I have ticket booked for the palaces at 11.30 and we should have finished the visit by about 2pm.

What are some good restaurants near to the Alhambra?

You probably want to eat in the area around the entrance to the Alhambra and the car park.
If you wanted to go down into the centre of Granada you would need to catch a bus.

I go to the Alhambra several times a year and I have tried some places.

If you don't mind spending money the Parador has a good restaurant.
More info
https://granadamap.com/parador/indexsp.htm


If the weather is good there is an outside restaurant called the Mimbre.
There is a web page of it here. https://granadamap.com/mimbre/
It's not very cheap.

Another outside place is the Jardines de Alberto.
When you come out of the Alhambra go down the hill about 60 metres.
It's opposite the ticket office.
There is a menu del dia  and you can also choose from the menu.
https://granadamap.com/alberto/