This easy sheet pan chicken dinner comes together with just a few pantry spices and one pan. Juicy chicken thighs with crispy skin, roasted red onion, and bold ranch seasoning—simple, flavorful, and perfect for a busy night.
Add chicken, ranch dressing mix, Montreal seasoning and red pepper flakes to a large zip top bag. Gently mix together making sure chicken is coated with ingredients.
Heat oven to 400 degrees.
Drizzle olive oil on to a sheet pan. Place chicken skin side down on pan. Add onion around chicken. Place in oven and cook for 30 minutes. Flip chicken and continue to cook until internal temperature reaches 160 degrees about 10 more minutes. Turn oven to broil and cook until chicken skin is slightly charred - approximately 2 minutes.
Remove from oven and let rest for 5 minutes.
Notes
Variations:
Boneless Thighs: Cook 5–7 minutes less.
Drumsticks/Legs: Broil to crisp skin.
No Montreal? Use garlic powder, pepper, paprika, thyme.
Onion Swap: Try sweet onion, shallots, or garlic cloves.
No Ranch Mix? Use Italian seasoning with dill and garlic powder.
Storage Tips Store leftovers in an airtight container in the fridge for up to 3 days. Reheat in the oven or air fryer to keep the skin crisp. Avoid microwaving if you want to keep that golden texture.