High-Protein Sheet Pan Shrimp Fajitas with Bell Peppers and Onions

By Lauren Mitchell, Test Kitchen Director · Reviewed by AislePrompt Editorial · Published 2026-06-10 · Updated 2026-06-10

Sizzling shrimp and colorful bell peppers roasted together with fajita spices create a quick, protein-packed meal perfect for weeknights. This mexican-inspired high protein (high protein) ready in about 22 minutes pairs large shrimp, peeled and deveined, sliced into 1/2-inch strips large onion, olive oil for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 280 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 lb large shrimp, peeled and deveined
• 1 large, sliced into 1/2-inch strips red bell pepper
• 1 large, sliced into 1/2-inch strips yellow bell pepper
• 1, sliced into 1/2-inch strips large onion
• 3 tbsp olive oil
• 1 tbsp chili powder
• 1 tsp ground cumin
• 1 tsp smoked paprika
• 1/2 tsp garlic powder
• 1 tsp salt
• 1/2 tsp black pepper
• 1 tbsp fresh lime juice
• 2 tbsp chopped fresh cilantro

Instructions

1. Step 1: Preheat oven to 425°F and line a large sheet pan with foil or parchment. In a large bowl, combine 1 lb peeled and deveined shrimp, 1 sliced red bell pepper, 1 sliced yellow bell pepper, and 1 sliced large onion. Add 3 tbsp olive oil, 1 tbsp chili powder, 1 tsp ground cumin, 1 tsp smoked paprika, 1/2 tsp garlic powder, 1 tsp salt, and 1/2 tsp black pepper. Toss until everything is evenly coated.
2. Step 2: Spread the shrimp and vegetables in a single layer on the prepared sheet pan. Roast for 10-12 minutes until the shrimp turn pink and opaque and the vegetables soften and begin to char at edges.
3. Step 3: Remove from oven and immediately drizzle with 1 tbsp fresh lime juice. Sprinkle 2 tbsp chopped fresh cilantro over the top and gently toss to combine before serving warm with optional avocado or lettuce wraps.