Creamy Chicken Toast
1 large jalapeno pepper, or to taste, seeded … 1 pinch cayenne pepper 1 pinch ground black pepper 1 tablespoon butter 1 tablespoon chopped fresh tarragon 1 ½ cups heavy cream 12 ounces skinless, boneless chicken breast, … 2 tablespoons creme fraiche 2 tablespoons sliced green onions, white and … 4 slices bread, toasted salt to taste ¼ cup chicken broth ½ red bell pepper, or to taste, diced