Preheat the broiler and place a rack about 6 inches (15 cm) from the heating element; line a baking sheet with foil or parchment.
In a small bowl, combine 3 tablespoons mayonnaise and 1½ teaspoons Tabasco chipotle sauce; stir until smooth and set aside.
Cut the black pepper focaccia bread into 4 equal pieces. Slice each piece horizontally to create 4 bottoms and 4 tops.
Evenly spread the chipotle mayonnaise onto the 4 bottom halves.
Sprinkle 1 tablespoon chopped fresh cilantro evenly over the mayonnaise on the bottoms.
Divide 2 ounces smoked chicken breast evenly among the 4 bottoms and arrange in an even layer.
Thinly slice the 2 or 3 peppadew peppers and distribute the slices over the chicken.
Arrange the 6 avocado slices evenly across the 4 sandwiches.
Tear the 2 slices gouda cheese into four pieces (or halve each slice) and place the cheese pieces on top of the avocado on each open-faced sandwich.
Place the open-faced sandwiches on the prepared baking sheet and broil for 3–5 minutes, watching closely, until the cheese just begins to melt.
Remove from the oven, place the corresponding focaccia top on each sandwich, press lightly, and serve immediately.