Step 1

Pour the buttermilk and sriracha into a shallow bowl and stir to combine. Add the chicken and season with the black pepper. Marinate for 30 minutes.

Step 2

Heat the grill over medium heat. Grill the chicken for 4 minutes per side or until cooked through. Slice the chicken diagonally into thin pieces.

Step 3

Place the bagels, split side down, onto the hot grill and grill for 2-3 minutes or until lightly toasted.

Step 4

Stir together the mayonnaise and sriracha to make the spicy mayonnaise.

Step 5

Spread the spicy mayo on half of the toasted bagels. Top with the sliced chicken, bacon, tomato, and lettuce. Top with the remaining bagel pieces.