Place whole chicken in slow cooker with 1-2 cups of water or chicken broth. Season chicken with salt, pepper and garlic powder.
Cook on low for 8 or 10 hours.
Before dinner, cook the rice as directed.
How to Cook Tostones: Heat the cooking oil.
Peel or cut the peel from the green plaintains and cut into 1" chunks.
Add plantains to hot oil (I set mine on #7 on the burner's dial). Fry for about 5 minutes. Remove from oil with slotted spoon and place back on cutting board.
Smash plantains with potato masher or large rolling pin. Once smash, return to hot oil and fry again for 4-5 minutes. Remove from oil with slotted spoon and set on paper towel to rid of excess oil.
Cook rice, as directed.
Once chicken is cooked, let it cool for about 10 minutes before handling. Cut off as much chicken meat as you can.
Serve Chicken pieces with White Rice and Tostones and Ketchup.