Phenotyping for vegetable fruit quality traits can involve laborious postharvest and biochemical assays, decreasing efficiency of data collection. Portable devices that are easy to use and withstand in-field conditions to non-destructively and accurately quantify internal fruit quality traits would greatly enhance efficiency in breeding programs. We evaluated a hand-held quality spectrophotometer, the Felix-750, as an in-field tomato (Solanum lycopersicum L.) and pepper (Capsicum annuum) high-throughput phenotyping tool. Fruit quality traits included pH, soluble solids, carotenoids, and shrink in germplasm grown in replicated splitplot field trials. Germplasm included elite inbred cultivars and introgression lines Abbreviations: HTPP, high-throughput plant phenotyping; ILs, introgression lines; NIRS, near-infrared spectroscopy; PCA, principal component analysis; PLSR, partial least squares regression; RMSECV, root-mean square error of cross-validation; RPD, residual predictive deviation; SEC, standard error of calibration; SEP, standard error of prediction; UC, University of California; vis/NIRS, visible/near-infrared spectroscopy. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.