Season the chicken with the taco seasoning. In a skillet sauté chicken, peppers, and onions (if desired) in the olive oil, until the chicken is cooked. About 15 minutes.
While the chicken is cooking cut the corn tortillas with a 3 inch round cookie cutter or glass. Spray mini muffin pan with non-stick cooking spray and gently place tortillas into each opening to form little cups.
Fill the cups with the cooked chicken and pepper mix. Top with the Sargento Cheese.
Bake in the oven at 400 degrees F for 10 Minutes. Serve