Sheet Pan Pork Fajitas with Bell Peppers and Onions

By AislePrompt Test Kitchen · Reviewed by AislePrompt Editorial · Published 2026-05-10 · Updated 2026-05-10

Spiced pork strips roasted with colorful bell peppers and onions on a single pan, perfect for assembling quick fajitas. This mexican-inspired pork ready in about 40 minutes pairs olive oil, chili powder, ground cumin for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 480 calories and feeds 4, so it slots cleanly into a weekly meal plan and pairs well with a quick salad or grain on the side. Tap "Plan a meal with the AI" below to drop this recipe into your week and send the ingredients straight to Instacart. Nutrition values are approximate, calculated from USDA FoodData Central (fdc.nal.usda.gov) — verify against ingredient labels for any health-driven dietary plan.

Ingredients

• 1.5 pounds, trimmed and sliced into 1/4-inch strips pork tenderloin
• 1 large, sliced into thin strips red bell pepper
• 1 large, sliced into thin strips yellow bell pepper
• 1 large, sliced into thin strips green bell pepper
• 1 large, sliced into thin strips yellow onion
• 3 tbsp olive oil
• 2 tsp chili powder
• 1 tsp ground cumin
• 1 tsp smoked paprika
• 1/2 tsp garlic powder
• 1 tsp salt
• 1/2 tsp black pepper
• 1, cut into wedges fresh lime
• 1/4 cup chopped, for garnish fresh cilantro
• 8 small, warmed for serving flour tortillas

Instructions

1. Step 1: Preheat oven to 425°F. In a large bowl, combine 1.5 pounds pork tenderloin sliced into 1/4-inch strips, 1 large sliced red bell pepper, 1 large sliced yellow bell pepper, 1 large sliced green bell pepper, and 1 large sliced yellow onion.
2. Step 2: In a small bowl, mix 3 tbsp olive oil, 2 tsp chili powder, 1 tsp ground cumin, 1 tsp smoked paprika, 1/2 tsp garlic powder, 1 tsp salt, and 1/2 tsp black pepper. Pour this spice mixture over the pork and vegetables, tossing well to coat evenly.
3. Step 3: Spread the pork and vegetable mixture in a single layer on a rimmed baking sheet. Roast for 20-25 minutes, stirring halfway through, until pork is cooked through and vegetables are tender with slight char.
4. Step 4: Remove from oven and squeeze juice from 1 fresh lime over the fajita mixture. Garnish with 1/4 cup chopped fresh cilantro. Serve immediately with 8 warmed small flour tortillas for assembling fajitas.