This challenge is part of the Skye’s Adventure Challenges, the fourth agent Fortnite Chapter 2 Season 2 focuses on. You'll be asked to eat a total of 10 foods, either at Weeping Woods or at the Orchard north of Frenzy Farm.
This is actually an old challenge. On the menu this time, you have the choice: Apples or Mushrooms. Go to Weeping Woods to harvest mushrooms that give you shield, or to the Frenzy Farm Orchard for apples that give you health.
Map
The Orchard Apples
Overlooking the crops of Frenzy Farm, you'll find the Orchard in the north. There are trees and you can pick up nutritious apples at their base. Each one of them will give you 10 HP. Be careful though: you have to be injured before you can eat an apple. If you want to complete this challenge as soon as you land, the trick is to build a 4-storey ramp, jump from the top of it, and then eat the apples!
Weeping Woods Mushrooms
You can also go mushroom picking at Weeping Woods. There are dozens of them all over the undergrowth. These will give you shield in small doses. This is the best way to complete the challenge quickly because you won't need to injure yourself beforehand to eat them.
Team Rumble is a good solution to validate the challenge as you will be less likely to be disturbed during your collection.