Sheet Pan Cajun-Spiced Chicken and Vegetables

By Lauren Mitchell, Test Kitchen Director · Reviewed by AislePrompt Editorial · Published 2026-07-05 · Updated 2026-07-05

A vibrant sheet pan dinner with juicy chicken breasts and colorful vegetables seasoned with bold Cajun spices, roasted to perfection. This american-inspired chicken (gluten free) ready in about 40 minutes pairs olive oil, Cajun seasoning, minced garlic cloves for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 350 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

• 4 pieces (6 oz each) boneless skinless chicken breasts
• 3 tbsp olive oil
• 2 tbsp Cajun seasoning
• 1 large, sliced into 1/2-inch strips red bell pepper
• 1 large, sliced into 1/2-inch strips yellow bell pepper
• 1 medium, cut into 1-inch wedges red onion
• 2 medium, sliced into 1/2-inch rounds zucchini
• 4, minced garlic cloves
• 1 tbsp, freshly squeezed lemon juice
• 2 tbsp, chopped fresh parsley
• 1 tsp salt
• 1/2 tsp black pepper

Instructions

1. Step 1: Preheat oven to 425°F. In a large bowl, combine 3 tbsp olive oil, 2 tbsp Cajun seasoning, 1 tsp salt, 1/2 tsp black pepper, and 4 minced garlic cloves. Add 4 boneless skinless chicken breasts and toss to coat evenly.
2. Step 2: Arrange chicken breasts on a large rimmed baking sheet. Add 1 large sliced red bell pepper, 1 large sliced yellow bell pepper, 1 medium cut red onion, and 2 medium sliced zucchinis around the chicken, tossing vegetables lightly in any remaining seasoning mixture.
3. Step 3: Roast in the preheated oven for 20-25 minutes until chicken registers 165°F internally and vegetables are tender with edges slightly caramelized.
4. Step 4: Remove from oven, drizzle 1 tbsp freshly squeezed lemon juice over chicken and vegetables, and sprinkle 2 tbsp chopped fresh parsley before serving.