Calabaza Con Pollo (Squash With Chicken)

2-3 lbchicken thighs, skinless and boneless

1 md green calabaza squash

1 md zucchini

1 md yellow squash

1 md yellow onion

2 Tbsp cooking oil

1 Tbsp salt

2 tsp black pepper

3 tsp garlic powder

3 tsp cumin

1 md tomato

1 can 15 oz. canned whole kernal corn (drain juice)

1 can 8 oz. tomato sauce