Nicholas has published over 175 articles at outlets including Aleteia, Catholic World Report, and Homiletic and Pastoral Review, and is a former managing editor at Catholic Stand. He is the main content writer for the Grade 4 textbook in the Word of Life series from the Augustine Institute and Ignatius Press and contributed material to grades 2, 3, and 5. Nicholas also has created courses in world religion and philosophy for online Catholic high schools and has taught at the community college level.