好吃 (hǎo chī) is the basic, everyday word for 'tasty, delicious' when talking about food. It's more common and simpler than 香 (xiāng, HSK4), which emphasizes a pleasant aroma, or 美味 (měi wèi, HSK5), which is more formal and often used as a noun for 'delicacy'. Just use 好吃 for anything that tastes good.