@wesner0019, the 8-SOIC package comes in different widths. The Particle folks may have passed the wrong link. Right chip, wrong size.
The Macronix MX25R1635FM2IL0 (as per link) has a package size of 0.209", 5.30mm Width.
The Macronix MX25R1635FM1IL0 has a package size of 0.154", 3.90mm Width.
Notice the ONE DIGIT difference. I suspect you may need the smaller version though I would suggest taking a quick measurement to verify.