ADAM31

I have a specialized tarmac 2021 with 7000 miles on it. I have recently changed my chain out but also prior to the new chain I had been hearing a noise only in my big chain ring while out of the saddle putting some stress on the pedals more on the right side pedaling in the downward motion. Most noticeable when rocking back and forth. The noise is not their in the small chain ring and cannot be heard when in either the big or small chainrings while seated even riding up an incline while seated. I change out the chain about every 2000 miles or so. Mechanic said that my cassette is in good shape and I don’t have any issues with changing gears.