Spicy Vegan Chili

Name: Spicy Vegan Chili
Ingredients: 1 1/2 tablespoons olive oil; 1/2 large yellow onion, diced; 1 medium yukon potato, diced; 1 medium sweet potato, diced; 3 medium roma tomatoes, diced; 1 jalapeño pepper, diced (leave the seeds in for more spice); 2 garlic cloves, minced or pressed; 2 teaspoons chili powder; 1 teaspoon cumin; 1/2 teaspoon cayenne pepper; 3 cups vegetable broth; 1 cup canned pinto beans, rinsed; 4 cups chopped collard greens; 1 14-ounce package firm tofu, rinsed and diced; 2 teaspoons sea salt; 1 dash freshly ground pepper (optional)