To bake chicken thighs at 400°F:

• Bone-in, skin-on chicken thighs typically take about 35 to 45 minutes to bake at 400°F. This timing ensures a crispy outside and juicy inside, with the chicken reaching a safe internal temperature of 165°F

• Boneless, skinless chicken thighs usually cook faster, about 30 to 35 minutes at 400°F

• For extra crispy skin, some recipes recommend broiling the chicken for an additional 2-3 minutes after baking

• Use a rimmed baking sheet or a baking dish, and pat the chicken dry before seasoning to help the skin crisp up

• Always check the internal temperature with a meat thermometer to ensure it reaches at least 165°F for safety, though some prefer cooking to 180-190°F for more tender thighs

In summary, bake chicken thighs at 400°F for about 35-45 minutes (bone-in, skin-on) or 30-35 minutes (boneless), until the internal temperature is 165°F, optionally finishing with a broil for crispiness