Shrimp and Zucchini Tacos

INGREDIENTS

• 2 canola oil, divided
• 1 large zucchini, halved lengthwise, cut crosswise into 1/4-inch half-moons
• 1 onion, chopped
• 1 red bell pepper, cored, seeded, and chopped
• 4 garlic cloves, chopped
• Kosher salt, freshly ground pepper
• 1 medium shrimp, peeled, deveined, cut into 1/2-inch pieces
• 1/2 chili powder
• Corn or flour tortillas
• Assorted toppings, such as diced avocado, cilantro, and lime wedges