Light Brahmas are normally very people friendly. Yours weren't socialized to people, though, at the formative age. During that first week, they imprint on humans when hand raised.
But it's never too late. Brahmas are also noted for their intense fondness of food in all forms. So that's definitely the doorway to their hearts.
I would visit the pen several times a day, sitting on the ground so you're at their level. Toss the treats out at first to get them to associate you with food, but then hold it in your hands and make them come to you from then on. As they eat from your hand, gradually get them used to being touched. They'll soon associate being touched with the pleasure of eating treats. Soon they'll be all over you, as Brahmas enjoy closeness and cuddling. Make no sudden movements until they come to trust you, though.
Raisins, tomatoes, watermelon, BOSS, grated carrots, are all huge favorites. Meal worms can get expensive.