Bake chicken tenders according to package instructions. Allow to cool & then cut into 1" size pieces.
While cooling, prepare the remainder of the soup
In a large pot, heat oil over medium heat. Add garlic & cook until fragrant, 1-2 minutes. Stir in tomato paste & crushed red pepper flakes
Add canned tomatoes and chicken broth & bring to a simmer. Add penne paste and cook until al dente, 10-12 minutes.
Add pre-cut chicken strip pieces, and mozzarella. Let cheese melt and then add salt & pepper to taste. If desired, add more cheese on top when serving.
For a hearty twist, try serving your soup in a warm bread-bowl!