Black Bean and Roasted Vegetable Burritos

Name: Black Bean and Roasted Vegetable Burritos
Ingredients: Vegetable oil spray; 4 medium red, green and yellow bell peppers, cut into 3-by-1/4-inch matchsticks; 1 large onion, sliced crosswise 1/4 inch thick; 1 medium zucchini, cut into 3-by-1/4-inch matchsticks; 1 tablespoon fresh lemon juice; 2 teaspoons extra-virgin olive oil; 1 teaspoon oregano; Salt and freshly ground pepper; 3 cups cooked black beans, drained and rinsed if canned; 2 scallions, finely chopped; 2 canned chipotles chiles—stemmed, seeded and minced; 3 garlic cloves, minced; 2 tablespoons finely chopped fresh cilantro; 1 to 2 tablespoons fresh lime juice; Eight 10-inch flour tortillas; 1 cup grated low-fat Cheddar cheese (about 3 ounces); 3 tomatoes, seeded and minced