Chicken tikka are usually make with skinless and boneless pieces of either chicken thigh or breast. Chicken tandoori, however can be made with both boneless chicken or bone-in chicken. The tandoori masala is a unique blend of spices that are used to marinade the tandoori chicken before grilling it. Tandoori chicken tikka is a combination of the two - chicken pieces are marinated in a tandoori marinade and then grilled.