Zesty Peri Peri One Pot with Sweet Potato, Turtle Beans and Coconut Milk

2 chicken breasts (around 150g each)
1 medium sweet potato (150g)
1/2 can (200g) Black/Pinto/Kidney beans
½ tsp. each of oregano and thyme
1/2 lime zest and juice
1/2 lemon zest and juice
1/2 lemon flesh