When cooking chicken thighs in the oven, the cooking time can vary depending on the size and thickness of the thighs. However, cooking chicken thighs at a relatively low temperature like 180°C (356°F) may result in a longer cooking time to ensure that the chicken is cooked through and reaches a safe internal temperature.
As a general guideline, bone-in, skin-on chicken thighs typically take about 30 to 40 minutes to cook at 180°C (356°F). It's important to use a food thermometer to ensure the internal temperature of the chicken reaches 75°C (165°F), which is the minimum safe temperature for poultry.
Keep in mind that cooking times may vary, so it's always a good idea to use a food thermometer to check for doneness. Additionally, factors such as the specific oven and the size of the chicken thighs can influence the cooking time, so it's best to monitor the chicken as it cooks.