This soup is much meatier than last time, with plenty of chicken and vegetables.

meatier 是形容词 meaty 的比较级形式。meaty 由名词 meat（肉）加上形容词后缀 -y 构成，意思是"肉多的、肉味浓郁的"。meatier 表示"肉更多/肉味更浓的"。