Sheet Pan Chicken Fajitas

Ingredients

• 1 large onion, sliced
• 3 bell peppers, sliced
• 1 - 1 1/2 lbs. chicken, sliced
• Olive oil
• Salt and pepper
• 1/2 packet of taco seasoning mix
• 4 - 12 tortillas, depending upon size
• Optional: salsa, scallions, cilantro, lettuce, sour cream, avocado, etc.