Yes, there are many
other proteins
replacements for chicken, for example turkey, beef, fish, sea food,
eggs... Here's a 7 day meal planner, I hope it helps you get some ideas: http://fitgirlsdiary.com/2016/07/27/7-days-of-healthy-meal-prep-ideas-ready-to-eat-meals-and-protein-on-the-go-with-the-best-meal-containers/