Corn Tacos With Roasted Winter Vegetables & Red Cabbage Slaw

Ingredients

• 5 cups (3/4-inch-diced) mixed vegetables
• 1 red onion, cut into eighths
• 3 tablespoons extra virgin olive oil, divided
• 1 teaspoon dried mexican oregano (can substitute mediterranean oregano, marjoram, or omit)
• 1/2 teaspoon chile powder
• 1/2 teaspoon ground cumin
• kosher salt
• freshly ground black pepper
• 2 cups shredded red cabbage (about 1/2 small head)
• juice of 1 lime
• 1/4 cup coarsely chopped cilantro
• 8 corn tortillas
• 2 tablespoons toasted pumpkin seeds