Creating the Sheet Pan Chicken Shawarma Havarti Sandwich is straightforward if you follow these clear steps:

1. Preheat the Oven: Preheat your oven to 425°F (220°C) to prepare for roasting.

2. Marinate the Chicken: In a bowl, combine the chicken thighs with shawarma spice blend, olive oil, salt, and pepper. Mix until the chicken is well coated. Let it marinate for 10-15 minutes for best flavor.

3. Prepare Vegetables: Slice the red onion and bell pepper, then toss them in a little olive oil, salt, and pepper.

4. Arrange on Sheet Pan: Lay the marinated chicken thighs on one side of a parchment-lined sheet pan. Add the sliced vegetables to the other side.

5. Roast the Chicken and Vegetables: Place the sheet pan in the oven and roast everything for 25-30 minutes, or until the chicken is cooked through and reaches an internal temperature of 165°F (74°C).

6. Melt the Cheese: In the last 5 minutes of cooking, add slices of Havarti on top of the chicken. Return to the oven until the cheese is melted and bubbly.

7. Assemble the Sandwich: Remove the sheet pan from the oven. Allow the chicken to rest for a few minutes, then slice it into strips.

8. Prepare Pita or Rolls: Cut open the pita bread or sandwich rolls. Fill each with chicken, roasted vegetables, fresh parsley, and a generous dollop of Greek yogurt.

9. Garnish and Serve: Serve with lemon wedges on the side for an extra burst of flavor.

These steps guide you through creating a delicious Sheet Pan Chicken Shawarma Havarti Sandwich that’s sure to impress!