What is the ruling on eating products with meat or chicken flavors (such as Maggi cubes and soups) that are not labeled "halal," and is it a requirement that they be so, given the difficulty in finding halal products?

Writing the word "halal" on a product is not the criterion for the permissibility of eating the product. Rather, the decisive factor is the condition of the slaughtered animal itself. If the one who slaughtered it is a Muslim or a person of the book, and adhered to the Sharia guidelines, then eating from their slaughtered animal is permissible, even if "halal" is not written on it. If the slaughtering does not meet the guidelines, then it is not permissible to eat from it, even if that is written on it. This can be ascertained by asking experts and Islamic centers.