How can I get the quest Pickman's Gift from Hancock if he is my follower?

The quest Pickman's Gift is given by Hancock in Goodneigbor while he is not yet following you.

The dialogue options change once he's a follower.

How can I get this quest if he is already my follower?

1

1 Answer

I entered the Pickmans gallery and received the quest after rescuing Pickman.

2