Guacamole Salad

1 yellow bell pepper , seeded and 1/2-inch diced

1 (15-ounce) can black bean s, rinsed and drained

1/2 cup small diced red onion

2 tablespoons minced jalapeno peppers, seeded (2 peppers)

1/2 teaspoon freshly grated lime zest

1/4 cup freshly squeezed lime juice (2 limes)

1/4 cup good olive oil

1 teaspoon kosher salt

1/2 teaspoon freshly ground black pepper

1/2 teaspoon minced garlic

1/4 teaspoon ground cayenne pepper

2 ripe Hass avocado s, seeded, peeled, and 1/2-inch diced