roasted mixed potatoes

These were a hit!  (Photo taken before the potatoes were roasted).  One of my kids asked if I would please make them every night.  

roasted mixed potatoes (pass the peas, please)
1 large sweet potato, peeled and cut into rounds then lengthwise
5 small red potatoes, cut into rounds then lengthwise
2 tablespoons olive oil
1/2 teaspoon chili powder
1/2 teaspoon garlic salt
1/4 teaspoon pepper

Place foil over a cookie tray and preheat oven to 400 degrees.
In a ziplock bag, pour in oil and add seasonings.  Add cut potatoes.  Zip the bag and shake the potatoes until they are coated in oil and seasonings.
Place in the oven and roast for 35 minutes.