Chicken Ole

this is from Staci's kitchen and our family loves it. Who doesn't like velveeta and fritos?

3 purple onions, chopped
3 bell peppers, chopped (i usually use 2 red, one green)
1 tsp garlic powder
2 cans rotel brand tomatoes and chilies
1lb velveeta cheese, cut into chunks
1lb cheddar cheese, grated
6 cups cooked, chopped chicken
1 pint sour cream
1 (3oz) pimentos (optional)
3 cups cooked rice
1 bag small fritos (not so great with the "king size" fritos)

cook onions, peppers, garlic in oil. add rotel tomatoes and chilies (not drained) and bring to a boil. reduce heat and simmer until thick, about 15-20 minutes. add the cheeses and heat slowly until cheese is melted. add chicken, sour cream and pimentos, heat through DO NOT BOIL.
serve over a bed of rice and fritos. ole!
ps- i half this recipe a lot of times because it makes so much. leftovers are better heated over the stove than in the microwave becaue the cheese gets all rubbery in the micro.