Using chicken breasts: Chicken breasts can be substituted for the thighs, although I find thighs hold up better over the long cooking and breasts tend to fall into shreds. Still delicious, though!
Smoky flavor alternative: For a little of that smoky tandoori flavor, try using smoked paprika and roasted tomatoes.
Cooking rice: Here's my favorite method for cooking basmati rice in about 20 minutes: How To Cook Perfect Basmati Rice.
Storage: Leftovers can be refrigerated in an airtight container for up to 4 days or frozen for up to 3 months.