Preheat the oven to 375° F (190° C), and lightly spray a mini loaf pan (i.e. 5½"X3"/ 14 cm x 7.6 cm)
Dice all of the veggies in very small pieces
Sauté the onion, carrots, celery, red pepper (optional), garlic, and water in a small skillet over medium heat for 5-10 minutes, until the onions are translucent and the carrots are softened. Remove from heat and set aside.
Add the chickpeas (garbanzo beans) to a large bowl, and mash. Or pulse a few times in a food processor. and then add them to the bowl. (You want them well broken up, but not mushy)
Add the cooked vegetables and the remaining ingredients to the bean mixture, and stir until well combined.
Press the loaf mixture in the prepared loaf pan, pushing down with a spatula to make sure that it is well-packed.
Cover with foil and bake for 20 minutes.
In a small bowl, combine the ketchup and Worcestershire sauce.
After 20 minutes, remove the foil, spread some of the sauce on top of the loaf, and bake for another 15 minutes, uncovered.
Remove from the oven, and allow to sit for 10 minutes before slicing.
Serve with extra remaining sauce on the side.