Heat 1/2 tablespoon vegetable oil in a small saucepan over medium heat. Add half of the garlic and cook, stirring, until golden, about 1 minute. Add the beans and bring to a simmer. Remove from the heat, sprinkle with the cheese and cover to keep warm.
Heat 1 tablespoon vegetable oil in a skillet over medium-high heat. Add the pork, the remaining garlic, half of the red onion, the cumin, cayenne and 1/2 teaspoon salt. Cook, stirring, until the pork is browned, about 5 minutes; transfer to a bowl with a slotted spoon. Heat the remaining 1 tablespoon vegetable oil in the skillet. Add the bell pepper, zucchini and 1/4 teaspoon salt and cook until crisp-tender, about3 minutes. Return the pork to the skillet; add a splash of water, and salt and pepper to taste.
Fill the tortillas with the pork and vegetable mixture. Serve with the beans. Sprinkle with the remaining chopped onion.
Photograph by Justin Walker
Courtesy of Food Network Magazine