Cook rotini pasta according to package instructions until al dente.
In a large skillet, cook the cubed chicken over medium heat until no longer pink, about 5-7 minutes.
Add the can of Rotel tomatoes, cubed Velveeta cheese, and chicken broth to the skillet, stirring until combined.
Let the mixture simmer for about 5 minutes until the cheese melts and the sauce thickens slightly.
Once the sauce is creamy, add the cooked rotini pasta to the skillet, mixing well to coat evenly.
Season with garlic powder, salt, and pepper to taste, adjusting as necessary.
Serve immediately, garnished with herbs or additional cheese if desired.