Preheat the Oven to 375 degreesF. Saute 2 cloves garlic for 1 min. Add the red and green peppers, and zuccini and saute, stirring occasionally for 4 minutes, or until tender. Add 0.75 cup of the crushed tomatoes, salt, and black pepper, and cook uncovered three minutes longer. Place the Pinto beans, Black Beans, Chickpeas, remaining garlic and tomatoes in food processor, and puree until smooth. Spoon the puree into a lightly greased 23 cm pie plan. Top with the skillet mixture. Then spood the mashed potatoes on top. Bake uncovered for 25 minutes, or until the potatoes are lightly browned. Sprinkle with paprika if desired.