In a large mixing bowl, combine the softened cream cheese and sour cream. Use a spatula to blend them together until the mixture is smooth and creamy.
Add the drained Rotel tomatoes, finely diced green bell pepper, cooked and shredded chicken, shredded Mexican cheese, homemade taco seasoning, chopped green onions, and chopped cilantro to the cream cheese mixture. Stir until everything is well combined.
Lay one tortilla flat on a clean surface. Take a generous scoop of the filling and spread it evenly across the tortilla, leaving about half an inch of space around the edges.
Starting from one end, carefully roll the tortilla tightly around the filling. Make sure to roll it snugly, but not so tight that the filling spills out. Repeat this process for the remaining tortillas.
Once all the tortillas are rolled, wrap each one in plastic wrap. Place them in the refrigerator for at least 30 minutes to set.
After chilling, remove the pinwheels from the refrigerator. Unwrap them and use a sharp knife to slice them into 1-inch pieces. Arrange the sliced pinwheels on a platter and serve with your favorite dipping sauces.