I keep their layer food only in the coop. They can always grab some when they go back to the coop to lay, plus they are constantly eating as they are foraging.
I have water in their coop, a bowl of water in the run and in non-freezing weather there is always a fresh bowl of water on the edge of the front patio that they share with our other pets. They love to drink out of all the bowls. The patio bowl is at the opposite end of the house from where the coop is, so they don't have to go all the way back to the coop for water, when they're foraging at the other end of the property. They forage over a couple of acres.