Try going with whole chicken and separating the pieces yourself. You can even throw it into a slow cooker completely frozen if you're lazy. The downside is the time it takes to do the separation, but I've found that in aggregate it's actually a marked convenience, even compared to buying already separated chicken breasts. 1 whole chicken = 8 meals for me, and prepping it only takes about half an hour.

Last year I essentially switched to chicken as my only meat source for meals eaten at home, mostly by default. I sort of ditched that around Christmas after becoming bored of it, but I've found that after doing 1 hour of prep time (half an hour for chicken, half an hour for packing salads) twice a week with the whole chicken approach, it's hard to go back spending 1-2 hours a day in the kitchen, 5-7 days a week--which is a routine I managed for years up until then.