Fifteen chilli genotypes were evaluated for studying their stability in the rabi ( winter) season in two years under five fertility levels (0, 50, 100, 150 and 200 percent of recommended dose of fertilizers as 100:50:50 kg NPK/ ha) by adopting FRB Design with three replications. Pooled analysis of variance revealed significant genetic variability among the genotypes for growth, yield and quality characters. The component of G x E was also highly significant for all the characters. With respect to fresh green fruit yield none of the genotype showed absolute stability. The highest fresh green fruit yield was recorded in Ulka 686 (15.98 t/ha) and was specifically adopted under favourable condition. Higher yield was also recorded by Jwalan (15.68 t/ha), CA-29 (14.76 t/ha) and CA-48 (13.92 t/ha) but these genotypes were not stable under changing environment as their s2di value was significant. Among the high yielding genotypes CA-47 (14.81 t/ha), NS-1701 (13.06 t/ha) performed better under favourable condition and the genotypes Tejaswini (10.65 t/ha), DKC-8 (10.10 t/ha) and CA-30 (10.01 t/ha) performed better under adverse condition. Ascorbic acid content in the genotypes Diamond and Tejaswini showed stability as because their regression coefficient near unity (bi=0.99).