Creating Sheet Pan Harissa Chicken with Blistered Grapes is straightforward if you follow these simple steps:

1. Preheat the Oven: Preheat your oven to 425°F (220°C).
2. Prepare Chicken: In a large bowl, combine chicken thighs, harissa paste, olive oil, salt, and pepper. Mix until the chicken is well coated.
3. Arrange Ingredients: On a large sheet pan, arrange the marinated chicken thighs, sliced red onion, and minced garlic.
4. Add Grapes: Scatter the grapes around the chicken and onion on the sheet pan.
5. Drizzle Lemon Juice: Squeeze fresh lemon juice over the chicken and grapes for added brightness.
6. Roast: Place the sheet pan in the preheated oven and roast for 25-30 minutes, until the chicken is cooked through and the grapes are blistered.
7. Check Doneness: Ensure the chicken reaches an internal temperature of 165°F (75°C).
8. Garnish: Remove the sheet pan from the oven and let it rest for a few minutes. Garnish with fresh parsley before serving.

These steps will guide you in creating this amazing dish effortlessly.