Sheet Pan Chicken Sausage Fajitas with Peppers and Onions

Easy, healthy and delicious, these sheet pan chicken fajitas made with chicken sausage focus on bold flavor and simple prep. Roast everything at once in about 20 minutes and serve however you like—tacos, quesadillas, bowls or piled onto warm tortillas.

Sheet pan dinners are a weeknight hero. Instead of juggling multiple pans on the stove, everything goes on one tray for a mostly hands-off meal. That means less time cleaning and more time enjoying dinner with family. This recipe showcases how versatile sheet pan cooking can be—change up the toppings and sides to suit your taste.

This particular version uses fully cooked chicken sausage for convenience. The sausage adds savory richness and pairs perfectly with roasted bell peppers and onions for classic fajita flavor. The assembly is minimal, and the oven does the rest.

If you want to boost the protein even more, try adding a can of chickpeas tossed with the peppers before roasting for a heartier variation.

About the chicken sausages

Fully cooked chicken sausages are a convenient choice for quick dinners because they only need to be heated through. Many brands offer minimally processed varieties and gluten-free options if you prefer that. Using pre-cooked sausage shortens total cook time and keeps meal prep simple without sacrificing flavor.

Chicken sausages come in many seasonings—Mexican-style, Italian, breakfast blends and more—so you can easily adapt this sheet pan method to different cuisines. Choose your favorite flavor to keep dinners interesting week after week.

How to make sheet pan chicken fajitas with chicken sausage

1. Preheat the oven to 400°F (200°C). Line a large sheet pan with parchment paper for easy cleanup.
2. Wash and slice the bell peppers and cut a red onion into wedges. I used yellow, orange and red peppers for color, but any combination will work. Slice the chicken sausages into 1 to 1½-inch pieces—since they are pre-cooked, you are only reheating them.
3. Arrange the peppers, onion wedges and sausage slices on the sheet pan. Drizzle with olive oil and sprinkle with spices: chili powder, smoked paprika, dried oregano, cumin, salt and pepper. Toss everything together so the vegetables and sausage are evenly coated.
4. Roast in the preheated oven for about 20 minutes, or until the peppers are tender and slightly charred at the edges and the sausage is heated through. Timing may vary slightly depending on your oven and how thick the vegetables are sliced.

Serve these chicken sausage fajitas any way you prefer: in warm tortillas, over rice in a burrito bowl, stuffed into quesadillas or alongside beans and salad. Top with guacamole, fresh cilantro, sour cream or a squeeze of lime for brightness. They’re an excellent family-friendly option that’s easy to customize.

If you try this recipe, leave a comment to share how you served it and any tweaks you made. Hearing how others adapt recipes is always helpful and inspiring.