Looks like sunburn probably due to very hot weather and not enough water; maybe some shade would help during the hottest times. Is it in a container or in the ground; looks like it could be both.

You have a lot of fruit for a tree that size; at the least I would take off all the sunburned fruit and maybe give it a good shot of fertilizer.

What John said (except one small caveat). This is a classic sign of a tree that has been sunburned and is severely water deficient. Pull all the fruit off the tree, water deeply until you're sure the soil is watered down 24". Keep the soil moist down at least 18", which may mean watering 3 times a week while our weather here in S. California is still so hot. You don't say where you are in S. California. Temps can vary by almost 30 degrees from the coast to the inland areas. Provide afternoon shade for now until this tree has fully recovered. Whitewash the trunk with flat latex house paint cut in half with water to protect this young tree's branches and trunk from further sun damage, since this tree will defoliate from this. If you keep it watered and protected from the sun, it should start to recover. Here's the caveat: Once you see signs of recovery (leaves that are left perk up, and new flush is starting to push out), go ahead and water well, THEN put down your fertilizer, then water in the fertilizer. Never put down fertilizer when the plant is dry, or you run the risk of burning the feeder roots.

Patty S.

Thank you for your input!
Smiles,
Sooz